{"title":"Crystals2Collect - NEW ARRIVALS","description":"\u003cp\u003eOn this page you will find the latest arrivals. To get updates on new arrivals before their publication here or on sales channels, subscribe to our newsletter. You earn 10% discount (except on gold and silver) when you receive our newsletter on every order. T\u0026amp;Cs apply.\u003cbr\u003e\u003cbr\u003eFor Gold specimen have a look at the \u003ca href=\"https:\/\/crystals2collect.com\/collections\/gold\" target=\"_self\" title=\"gold\"\u003egold\u003c\/a\u003e collection.\u003cbr\u003e\u003cbr\u003eFor technical and chemical information please go to \u003ca href=\"https:\/\/www.mindat.org\" target=\"_blank\" title=\"Mindat.Org link\" rel=\"noopener\"\u003ewww.mindat.org\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e","products":[{"product_id":"acanthite-silver","title":"ACANTHITE, REYES MINE, GUANAJUATO, MEXICO (miniature)","description":"\u003cp\u003e\u003cstrong\u003eAcanthite\u003c\/strong\u003e is a silver sulfide mineral represented by the chemical formula Ag2S. It crystallizes in the monoclinic system and remains stable as silver sulfide at temperatures below 173 °C (343 °F), while argentite is stable at higher temperatures. When argentite cools past this threshold, its cubic structure transforms into the monoclinic structure of acanthite, which can also form directly at temperatures below 173 °C. Acanthite is the only stable form of silver sulfide at typical ambient temperatures.\u003c\/p\u003e \u003cp\u003eThis mineral is frequently found in moderately low-temperature hydrothermal veins and areas of supergene enrichment, often occurring alongside native silver, pyrargyrite, proustite, polybasite, stephanite, aguilarite, galena, chalcopyrite, sphalerite, calcite, and quartz. Acanthite was first identified in 1855 in the Jáchymov district of the Ore Mountains, now part of the Karlovy Vary Region in the Czech Republic. Its name derives from the Greek word \"akantha,\" meaning thorn or arrow, which reflects its distinctive crystal shape.\u003cbr\u003e\u003cbr\u003ePROTECT AGAINST LIGHT\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"20 8 2003","offer_id":52557130137876,"sku":"20 8 2003","price":105.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250306_131034.jpg?v=1769221830"},{"product_id":"actinolite-uralite-diopside","title":"ACTINOLITE VARIETY URALITE (AFTER DIOPSIDE), QUARTZ, CALUMET MINE, CHAFFEE COUNTY, COLORADO, USA (small cabinet)","description":"\u003cp\u003e Actinolite is a silicate mineral belonging to the amphibole group, characterized by the chemical formula Ca2(Mg4.5–2.5Fe2+0.5–2.5)Si8O22(OH)2.\u003c\/p\u003e \u003cp\u003eIts name originates from the Greek term aktis, which translates to \"beam\" or \"ray,\" reflecting its fibrous structure.\u003c\/p\u003e \u003cp\u003eActinolite serves as an intermediate in a solid-solution series between magnesium-rich tremolite and iron-rich ferro-actinolite, allowing for the exchange of magnesium and iron ions within its crystal lattice.\u003c\/p\u003e \u003cp\u003eThis mineral is often found in metamorphic rocks, particularly in contact zones around cooled intrusive igneous formations, and results from the metamorphism of magnesium-rich limestones. Additionally, the term uralite is sometimes used to describe an alteration product of primary pyroxene that predominantly consists of actinolite, commonly found in metamorphosed gabbro or diabase, known as epidiorite.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"80 40 60 150","offer_id":49739997774100,"sku":"80 40 60 150","price":245.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241231_133432.jpg?v=1769221841"},{"product_id":"adamite-santa_eulalia","title":"ADAMITE, SANTA EULALIA, MEXICO (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eAdamite\u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003e is a mineral composed of zinc arsenate hydroxide, with the chemical formula Zn2AsO4OH. It is commonly found in the oxidized or weathered areas.\u003c\/span\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-AU\"\u003eWhile pure adamite is colorless, it often exhibits a yellow hue due to the presence of iron compounds. Additionally, green shades can be observed, which are attributed to copper substitutions within its structure. \u003cstrong\u003eOlivenite, a copper arsenate, shares an isostructural relationship with adamite, and there is significant substitution between zinc and copper, leading to the formation of an intermediate known as\u003c\/strong\u003e \u003cstrong\u003ecuproadamite\u003c\/strong\u003e. Recently identified, zincolivenite is another intermediate mineral characterized by the formula CuZn(AsO4)(OH), and the structure can also accommodate substitutions from manganese, cobalt, and nickel. Furthermore, a related zinc phosphate mineral called tarbuttite has been documented.\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"61 34 31 36","offer_id":49739997806868,"sku":"61 34 31 36","price":360.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250128_131429.jpg?v=1769221905"},{"product_id":"adamite-limonite-3","title":"ADAMITE ON LIMONITE, MINA OJUELA, MAPIMI, MUN. DE MAPIMI, DURANGO, MEXICO (cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eAdamite\u003c\/strong\u003e is a mineral composed of zinc arsenate hydroxide, with the chemical formula Zn2AsO4OH. It is commonly found in the oxidized or weathered areas,\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003eWhile pure adamite is colorless, it often exhibits a yellow hue due to the presence of iron compounds. Additionally, green shades can be observed, which are attributed to copper substitutions within its structure. \u003cstrong\u003eOlivenite, a copper arsenate, shares an isostructural relationship with adamite, and there is significant substitution between zinc and copper, leading to the formation of an intermediate known as\u003c\/strong\u003e \u003cstrong\u003ecuproadamite\u003c\/strong\u003e. Recently identified, zincolivenite is another intermediate mineral characterized by the formula CuZn(AsO4)(OH), and the structure can also accommodate substitutions from manganese, cobalt, and nickel. Furthermore, a related zinc phosphate mineral called tarbuttite has been documented.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"100 50 70  259","offer_id":49739997872404,"sku":"100 50 70  259","price":295.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_3476.jpg?v=1769221949"},{"product_id":"adamite-limonite-2","title":"ADAMITE on LIMONITE, MINA OJUELA, MAPIMI, MUN. DE MAPIMI, DURANGO, MEXICO (small cabinet)","description":"\u003cp\u003eWhile pure adamite is colorless, it often exhibits a yellow hue due to the presence of iron compounds. Additionally, green shades can be observed, which are attributed to copper substitutions within its structure. \u003cstrong\u003eOlivenite, a copper arsenate, shares an isostructural relationship with adamite, and there is significant substitution between zinc and copper, leading to the formation of an intermediate known as\u003c\/strong\u003e \u003cstrong\u003ecuproadamite\u003c\/strong\u003e. Recently identified, zincolivenite is another intermediate mineral characterized by the formula CuZn(AsO4)(OH), and the structure can also accommodate substitutions from manganese, cobalt, and nickel. Furthermore, a related zinc phosphate mineral called tarbuttite has been documented.\u003c\/p\u003e \u003cp\u003eThis ADAMITE on LIMONITE specimen offers a remarkable solution, combining two fascinating minerals in a compact, display-friendly size. It features adamite, a rare mineral composed of zinc arsenate hydroxide, known for its striking color variations that include yellow due to iron compounds and hints of green from copper substitutions. Paired with limonite, a historically important iron ore used since ancient times, this mineral duo provides an engaging and educational experience.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eComposed of zinc arsenate hydroxide with unique color variations\u003c\/li\u003e \u003cli\u003eShowcases limonite, one of the three main iron ores with a rich history in iron production\u003c\/li\u003e \u003cli\u003eAvailable in a small cabinet size, perfect for collectors and educational displays\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eCollectors appreciate this kind of specimens for their perfect balance of scientific interest and natural beauty. \u003c\/p\u003e \u003cp\u003eEnhance your collection with this extraordinary mineral specimen. Whether for personal enjoyment or educational purposes, this ADAMITE on LIMONITE offers a stunning and informative addition that stands out naturally. Don't miss the chance to own a piece that combines both mineralogical significance and aesthetic appeal.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"65 35 50 97","offer_id":49739997937940,"sku":"65 35 50 97","price":315.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250112_182153.jpg?v=1769221982"},{"product_id":"adamite-limonite","title":"ADAMITE on LIMONITE, MINA OJUELA, MAPIMI, MUN. DE MAPIMI, DURANGO, MEXICO (large cabinet)","description":"\u003cp\u003eAdamite is a mineral composed of zinc arsenate hydroxide, with the chemical formula Zn2AsO4OH. It is commonly found in the oxidized or weathered areas above zinc ore deposits. While pure adamite is colorless, it often appears yellow due to the presence of iron compounds. Additionally, green hues can be observed, which are attributed to copper substitutions within its structure.\u003c\/p\u003e \u003cp\u003eLimonite is an iron ore made up of a blend of hydrated iron(III) oxide-hydroxides with varying compositions. While it is often represented by the formula FeO(OH)·nH2O, this depiction is somewhat misleading since the proportions of oxide to hydroxide can differ significantly.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"145 70 100","offer_id":49739997970708,"sku":"145 70 100","price":645.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_2689.jpg?v=1769222014"},{"product_id":"adamite-cuproadamite","title":"ADAMITE VARIETY CUPROADAMITE, MINA OJUELA, MAPIMI, MUN. DE MAPIMI, DURANGO, MEXICO (miniature)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eAdamite\u003c\/strong\u003e is a mineral composed of zinc arsenate hydroxide, with the chemical formula Zn2AsO4OH. It is commonly found in the oxidized or weathered zones above deposits of zinc ore.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003eWhile pure adamite is colorless, it often exhibits a yellow hue due to the presence of iron compounds. Additionally, green shades can be observed, which are attributed to copper substitutions within its structure. \u003cstrong\u003eOlivenite, a copper arsenate, shares an isostructural relationship with adamite, and there is significant substitution between zinc and copper, leading to the formation of an intermediate known as\u003c\/strong\u003e \u003cstrong\u003ecuproadamite\u003c\/strong\u003e. Recently identified, zincolivenite is another intermediate mineral characterized by the formula CuZn(AsO4)(OH), and the structure can also accommodate substitutions from manganese, cobalt, and nickel. Furthermore, a related zinc phosphate mineral called tarbuttite has been documented.\u003cbr\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"53 35 35 37","offer_id":49739998036244,"sku":"53 35 35 37","price":385.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250219_134557.jpg?v=1769222070"},{"product_id":"aegirine-1-crystals-minerals-crystals2collect-rocks-microcline","title":"AEGIRINE ON MICROCLINE, MOUNT MALOSA, ZOMBA, MALAWI (miniature)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-AU\"\u003e\u003cstrong\u003eAegirine\u003c\/strong\u003e belongs to the clinopyroxene group of inosilicate minerals and serves as the sodium endmember of the aegirine–augite series. Its chemical composition is represented by the formula NaFeSi2O6, where iron exists as the Fe3+ ion. Within the aegirine–augite series, sodium can be partially substituted by calcium, while iron(II) and magnesium can replace iron(III) to maintain charge balance. Additionally, aluminum can substitute for iron(III). A notable variety of this mineral is acmite, which is characterized by its fibrous green appearance.\u003c\/span\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan lang=\"EN-AU\"\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003cspan lang=\"EN-AU\"\u003e\u003cstrong\u003eAegirine\u003c\/strong\u003e typically forms dark green monoclinic prismatic crystals, exhibiting a glassy luster and perfect cleavage. Its hardness on the Mohs scale ranges from 5 to 6, and it has a specific gravity that falls between 3.2 and 3.4.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eMicrocline \u003c\/b\u003e(KAlSi3O8) is a significant tectosilicate mineral that contributes to the formation of igneous rocks. As a potassium-rich alkali feldspar, it often contains trace amounts of sodium and is frequently found in granite and pegmatite formations. Microcline develops during the gradual cooling of orthoclase and exhibits greater stability at lower temperatures compared to orthoclase. In contrast, sanidine represents a polymorph of alkali feldspar that remains stable at even higher temperatures. The mineral can appear in various colors, including clear, white, pale yellow, brick red, or green, and is typically identified by its distinctive cross-hatch twinning, which results from the transformation of monoclinic orthoclase into triclinic microcline.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"50 45 20 42","offer_id":49739998069012,"sku":"50 45 20 42","price":145.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250118_103106.jpg?v=1769222090"},{"product_id":"amaldine-grossular-garnet-garnets-crystals-minerals-crystals2collect-rocks","title":"GROSSULAR, STEIGEN, NORDLAND, NORWAY (SINGLE LARGE CRYSTAL 50 x 50 x 50 mm) (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eGrossular\u003c\/strong\u003e is a calcium-aluminium member of the garnet mineral group, characterized by the chemical formula Ca3Al2(SiO4)3. In its composition, calcium can be partially substituted by ferrous iron, while aluminium may be replaced by ferric iron. The name grossular is derived from the gooseberry, grossularia, reflecting the green variety of this garnet found in Siberia. It also appears in other colors, including cinnamon brown, red, and yellow, and is recognized as a gemstone.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003eIn geological contexts, grossular has frequently been referred to as grossularite. However, since 1971, the International Mineralogical Association has advised against the use of the term grossularite for this mineral.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"50 50 50 179","offer_id":49739998560532,"sku":"50 50 50 179","price":65.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250113_100558.jpg?v=1769222101"},{"product_id":"amazonite-albite-crystals-minerals-crystals2collect-rocks","title":"AMAZONITE ON ALBITE, PARK COUNTY, COLORADO, USA (small cabinet)","description":"\u003cp\u003eALBITE\u003c\/p\u003e \u003cp\u003eAmazonite, often referred to as amazonstone, is a green tectosilicate mineral classified as a variety of potassium feldspar known as microcline. The formula represents its chemical composition KAlSi3O8, which is polymorphic with orthoclase. The Amazon River lent its name to the mineral because people historically sourced green stones there, though it remains uncertain if those stones were indeed amazonite. Despite its use in jewelry for over three millennia, evidenced by archaeological discoveries in ancient Egypt and Mesopotamia, any ancient or medieval sources did not document it. The mineral was formally recognized as distinct only in the 18th century.\u003cbr\u003e\u003cbr\u003eAlbite is a type of plagioclase feldspar mineral, specifically the sodium endmember of the plagioclase solid solution series, characterized by having less than 10% anorthite content. The chemical formula for pure albite is NaAlSi3O8, and it falls under the category of tectosilicates. Typically, albite appears in a pure white color, which is reflected in its name derived from the Latin word \"albus.\" This mineral is frequently found in felsic rocks.\u003cbr\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"80 50 65 296","offer_id":52538313638164,"sku":"80 50 65 296","price":145.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_2609_03c2023d-7698-4a73-b22f-32b7ceb70982.jpg?v=1769222029"},{"product_id":"amber-crystals-minerals-crystals2collect-rocks-amber_kauri_gum-copal_amber","title":"AMBER KAURI GUM, COPAL AMBER, NORTHERN ISLAND, NEW ZEALAND (small cabinet)","description":"\u003cp\u003eAMBER KAURI GUM, COPAL AMBER \u003cspan style=\"font-size: 0.875rem;\"\u003eAmber is the fossilized resin of trees, valued for its color and natural allure since the Neolithic era, and has been crafted into gemstones since ancient times. It is commonly utilized in jewelry and is also recognized for its purported healing properties in traditional medicine. \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003eAmber is categorized into five classes based on its chemical composition. As it begins as a viscous tree resin, it often encapsulates various plant and animal materials. Additionally, amber found in coal seams is referred to as resinite, while the specific type located in New Zealand coal seams is known as ambrite.\u003cbr\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"80 40 15 22","offer_id":49739998626068,"sku":"80 40 15 22","price":195.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250101_112221.jpg?v=1769222039"},{"product_id":"anglesite-crystals-minerals-crystals2collect-rocks","title":"ANGLESITE, TOUISSIET MOROCCO (small cabinet)","description":"\u003cp\u003eAnglesite is a lead sulfate mineral represented by the chemical formula PbSO4. It forms as an oxidation product of the primary sulfide ore, galena. Anglesite can be found in prismatic orthorhombic crystals and earthy masses, and it is isomorphous with barite and celestine. The mineral contains 74% lead by mass, resulting in a high specific gravity of 6.3. Its color typically ranges from white to gray, often featuring pale streaks; however, it may appear dark gray if impurities are present.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"80 70 50  506","offer_id":49739998822676,"sku":"80 70 50  506","price":225.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_3435.jpg?v=1769222054"},{"product_id":"anhydrite-1-crystals-minerals-crystals2collect-rocks","title":"ANHYDRITE, Naica Saucillo Mun Chihuahua Mexico","description":"\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eAnhydrite\u003c\/strong\u003e, known as anhydrous calcium sulfate, has the chemical formula CaSO4 and crystallizes in the orthorhombic system, exhibiting perfect cleavage along three symmetry planes. Unlike the orthorhombic sulfates of barium (baryte) and strontium (celestine), it is not isomorphous with them despite similar chemical formulas. Well-formed crystals are relatively uncommon, as the mineral typically appears in cleavage masses. It has a Mohs hardness of 3.5 and a specific gravity of 2.9, with colors ranging from white to shades of grey, blue, or purple. The most developed cleavage exhibits a pearly luster, while other surfaces appear glassy. Anhydrite readily converts to gypsum (CaSO4·2H2O) upon contact with water, and this process is reversible; heating gypsum or calcium sulfate hemihydrate to approximately 200 °C (400 °F) can regenerate anhydrite under normal atmospheric conditions. In vein deposits, anhydrite is often found alongside calcite, halite, and various sulfides, including galena, chalcopyrite, molybdenite, and pyrite.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"59 60 18 140","offer_id":49739998855444,"sku":"59 60 18 140","price":155.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250113_090438.jpg?v=1771215867"},{"product_id":"anhydrite-2-crystals-minerals-crystals2collect-rocks-sulfide","title":"ANHYDRITE with undeterminated sulfide (?), Naica Saucillo Mun Chihuahua Mexico","description":"\u003cp\u003e\u003cstrong\u003eAnhydrite\u003c\/strong\u003e, known as anhydrous calcium sulfate, has the chemical formula CaSO4 and crystallizes in the orthorhombic system, exhibiting perfect cleavage along three symmetry planes. Unlike the orthorhombic sulfates of barium (baryte) and strontium (celestine), it is not isomorphous with them despite similar chemical formulas. Well-formed crystals are relatively uncommon, as the mineral typically appears in cleavage masses. It has a Mohs hardness of 3.5 and a specific gravity of 2.9, with colors ranging from white to shades of grey, blue, or purple. The most developed cleavage exhibits a pearly luster, while other surfaces appear glassy. Anhydrite readily converts to gypsum (CaSO4·2H2O) upon contact with water, and this process is reversible; heating gypsum or calcium sulfate hemihydrate to approximately 200 °C (400 °F) can regenerate anhydrite under normal atmospheric conditions. In vein deposits, anhydrite is often found alongside calcite, halite, and various sulfides, including galena, chalcopyrite, molybdenite, and pyrite.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"83 40 6  35","offer_id":49739999052052,"sku":"83 40 6  35","price":185.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250112_140538.jpg?v=1771215891"},{"product_id":"antimonite-stibnite-crystals-minerals-crystals2collect-rocks","title":"ANTIMONITE-STIBNITE, PRC (miniature)","description":"\u003cp\u003eStibnite, also known as antimonite, is a sulfide mineral represented by the chemical formula Sb2S3. This soft, gray substance crystallizes within an orthorhombic space group and serves as the primary source of the metalloid antimony. Its name originates from the Greek word στίβι (stibi) and the Latin term stibium, which were historically used to refer to both the mineral and the element antimony.\u003cbr\u003e\u003cbr\u003eMiniature.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"25 23 19 25","offer_id":49739999183124,"sku":"25 23 19 25","price":65.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_2785.jpg?v=1771215925"},{"product_id":"apatite-1-crystals-minerals-crystals2collect-rocks","title":"APATITE, CERA DEL MERCADO, DURANGO, MEXICO (TOENAIL)","description":"\u003cp\u003e\u003cstrong\u003eApatite \u003c\/strong\u003erefers to a group of phosphate minerals, primarily including hydroxyapatite, fluorapatite, and chlorapatite, characterized by significant amounts of OH−, F−, and Cl− ions in their crystal structures. The combined formula for these three prevalent endmembers is represented as Ca10(PO4)6(OH,F,Cl)2, while the individual mineral unit cell formulas are Ca10(PO4)6(OH)2 for hydroxyapatite, Ca10(PO4)6F2 for fluorapatite, and Ca10(PO4)6Cl2 for chlorapatite.\u003c\/p\u003e \u003cp\u003eThe term \"apatite\" was introduced by German geologist Abraham Gottlob Werner in 1786, although the specific mineral he identified was later reclassified as fluorapatite in 1860 by mineralogist Karl Friedrich August Rammelsberg. Apatite is frequently confused with other minerals, a phenomenon that is reflected in its name, which originates from the Greek word ἀπατάω (apatáō), meaning to deceive.\u003cbr\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"22 16 15 6","offer_id":49739999215892,"sku":"22 16 15 6","price":385.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250423_085318.jpg?v=1771215937"},{"product_id":"sphalerite-calcite-2-crystals-minerals-crystals2collect-rocks","title":"CALCITE ON SPHALERITE, ELMWOOD MINE TENNESSEE USA (CABINET)","description":"\u003cp class=\"MsoNormal\"\u003eSphalerite, a sulfide mineral represented by the chemical formula (Zn, Fe)S, serves as the principal ore for zinc extraction. This mineral occurs in various types of deposits, predominantly within sedimentary exhalative, Mississippi-Valley type, and volcanogenic massive sulfide formations. It is commonly associated with other minerals such as galena, chalcopyrite, pyrite, as well as calcite, dolomite, quartz, rhodochrosite, and fluorite.\u003cbr\u003e\u003cbr\u003eCalcite is a carbonate mineral and the most stable form of calcium carbonate (CaCO3). It is widely found, especially as a key element in limestone. With a hardness rating of 3 on the Mohs scale, calcite is assessed based on its ability to be scratched. Large crystals of calcite are utilized in optical devices, while limestone, primarily made up of calcite, serves a variety of purposes.\u003c\/p\u003e \u003cp\u003eThis specimen has also miniature crystals and thousands of tiny calcite or dolomite crystals (white), and the matrix is a sulfide.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"115 70 100   672","offer_id":49739999281428,"sku":"115 70 100   672","price":285.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_3364.jpg?v=1771215974"},{"product_id":"apophillite-2-crystals-minerals-crystals2collect-rocks","title":"APOPHYLLITE (4 cm large single crystal) on ARAGONITE, POONA, INDIA (cabinet)","description":"\u003cp\u003eApophyllite designates a specific group of phyllosilicates, which are a category of minerals. Initially, this term referred to a single mineral but was redefined in 1978 to encompass a class of minerals with similar chemical compositions that form a solid solution series, including fluorapophyllite-(K), fluorapophyllite-(Na), and hydroxyapophyllite-(K). The term apophyllite is derived from the Greek word apophyllízo (ἀποφυλλίζω), meaning 'it flakes off,' highlighting the tendency of these minerals to disintegrate upon heating due to water loss. Exfoliation can also occur through acid treatment or simple abrasion. These minerals are commonly found as secondary formations within vesicles of basalt or other volcanic rocks.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"110 105 75 595","offer_id":52538313507092,"sku":"110 105 75 595","price":160.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_2541.jpg?v=1771216143"},{"product_id":"aragonite-086-07","title":"ARAGONITE, MOROCCO (cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eAragonite\u003c\/strong\u003e is a carbonate mineral and ranks among the three most prevalent natural crystal forms of calcium carbonate (CaCO3), alongside calcite and vaterite. It is produced through both biological and physical processes, notably through precipitation in marine and freshwater settings.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"90 71 70  432","offer_id":49739999576340,"sku":"90 71 70  432","price":225.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250213_135814.jpg?v=1771216162"},{"product_id":"aragonite-2-quartz-dolomite-pyrite-crystals-minerals-crystals2collect-rocks","title":"ARAGONITE with QUARTZ, DOLOMITE and PYRITE, CAVNIC, RUMANIA (large cabinet)","description":"\u003cp\u003eA complex and beautiful specimen with thousands of details. Hard to catch on photo.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAragonite\u003c\/strong\u003e is a carbonate mineral and ranks among the three most prevalent natural crystal forms of calcium carbonate (CaCO3), alongside calcite and vaterite. It is produced through both biological and physical processes, notably through precipitation in marine and freshwater settings.\u003c\/p\u003e \u003cp\u003eThe crystal structure of aragonite is distinct from that of calcite, leading to a unique crystal morphology characterized by an orthorhombic system and acicular crystals.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003ePyrite\u003c\/strong\u003e, commonly referred to as fool's gold, is an iron sulfide with the chemical formula FeS2, also known as iron (II) disulfide. It is the most prevalent sulfide mineral found in nature.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eQuartz\u003c\/strong\u003e is a robust crystalline mineral made up of silica, or silicon dioxide. Its structure consists of a continuous arrangement of SiO4 silicon-oxygen tetrahedra, where each oxygen atom is shared between two tetrahedra, resulting in the chemical formula SiO2. This classification places quartz as a framework silicate mineral in terms of structure and as an oxide mineral in terms of composition. It ranks as the second most prevalent mineral in the continental crust of Earth, following feldspar.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"130 65 130 908","offer_id":52538312229140,"sku":"130 65 130 908","price":335.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_2468_fd58ac8f-2e89-4fb5-9f9a-4f0c027682c7.jpg?v=1771216219"},{"product_id":"arsenic-crystals-minerals-crystals2collect-rocks","title":"ARSENIC CRYSTAL NATIVE, PRIBRAM, DANA LOCALITY, TSJECH REPUBLIC - for Mineral Collection (thumbnail)","description":"\u003cp\u003e\u003cstrong\u003eArsenic\u003c\/strong\u003e, represented by the symbol As and the atomic number 33, is a metalloid belonging to the pnictogen group, sharing characteristics with its group 15 counterparts, phosphorus and antimony. Arsenic naturally occurs in various minerals, often combined with sulfur and metals, and can also be found in its pure elemental form. Among its several allotropes, only the grey variant, which exhibits a metallic sheen, holds significant industrial value. \u003c\/p\u003e \u003cp\u003eThe primary application of arsenic lies in lead alloys, commonly utilized in car batteries and ammunition. Additionally, it serves as a prevalent n-type dopant in semiconductor devices and is a key component of gallium arsenide, a III–V compound semiconductor. Arsenic and its derivatives, particularly arsenic trioxide, are employed in the manufacture of pesticides, treated wood, herbicides, and insecticides.\u003c\/p\u003e \u003cp\u003eHistorically recognized for its poisonous effects on humans, arsenic is also metabolized by certain bacterial species. Some studies suggest that trace amounts of arsenic may be essential for the diet of certain animals, such as rats and chickens, though research on its potential role in human metabolism remains limited. Nonetheless, excessive exposure to arsenic can lead to poisoning in multicellular organisms, and groundwater contamination with arsenic poses a significant health risk to millions globally.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003eFormer Sobolewski Collection\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"12 10 10 51","offer_id":52538310951188,"sku":"12 10 10 51","price":85.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250320_134241.jpg?v=1771216301"},{"product_id":"artinite-crystals-minerals-crystals2collect-rocks","title":"ARTINITE, SAN BENITO COUNTY, BENITOITE GEM MT DIABLO, CA, USA (miniature)","description":"\u003cp\u003e\u003cstrong\u003eARTINITE\u003c\/strong\u003e is a hydrated basic magnesium carbonate mineral represented by the formula Mg2(CO3)(OH)2·3H2O. This mineral typically forms white, silky monoclinic prismatic crystals, which can appear in radial clusters or as encrustations. With a Mohs hardness of 2.5 and a specific gravity of 2, artinite is relatively soft and lightweight. It is primarily found in low-temperature hydrothermal veins and within serpentinized ultramafic rocks, often occurring alongside minerals such as brucite, hydromagnesite, pyroaurite, chrysotile, aragonite, calcite, dolomite, and magnesite. First identified in 1902 in Lombardy, Italy, it was named in honor of the Italian mineralogist Ettore Artini (1866–1928).\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"30 30 30 6","offer_id":49739999805716,"sku":"30 30 30 6","price":475.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250417_093554.jpg?v=1771216327"},{"product_id":"axinite-magnesioaxinite-crystals-crystals2collect-rocks-minerals","title":"AXINITE (-Mg) - MAGNESIOAXINITE, PUYVA, SUBPOLAR URALS, RUSSIA (cabinet)","description":"\u003cp\u003e\u003cstrong\u003eAxinite\u003c\/strong\u003e is a mineral that ranges in color from brown to violet-brown, or reddish-brown, and belongs to a group characterized by bladed formations. It is composed of calcium aluminium boro-silicate, with the chemical formula (Ca,Fe,Mn)3Al2BO3Si4O12OH. Notably, axinite exhibits both pyroelectric and piezoelectric properties.\u003c\/p\u003e \u003cp\u003eThe axinite group consists of the following varieties:\u003c\/p\u003e \u003cp\u003eAxinite-(Fe), also known as ferroaxinite, has the formula Ca2Fe2+Al2BOSi4O15(OH) and is rich in iron, displaying colors such as clove-brown, brown, plum-blue, and pearl-gray.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eAxinite-(Mg), or magnesioaxinite\u003c\/strong\u003e, is represented by the formula Ca2MgAl2BOSi4O15(OH) and is rich in magnesium, appearing in shades from pale blue to pale violet, as well as light brown to light pink.\u003c\/p\u003e \u003cp\u003eAxinite-(Mn), referred to as manganaxinite, has the formula Ca2Mn2+Al2BOSi4O15(OH) and is rich in manganese, showcasing colors like honey-yellow, clove-brown, and brown to blue.\u003c\/p\u003e \u003cp\u003eTinzenite, with the formula (CaFe2+Mn2+)3Al2BOSi4O15(OH), is an iron-manganese intermediate that can be yellow or brownish yellow-green.\u003c\/p\u003e \u003cp\u003eAdditionally, axinite is occasionally utilized as a gemstone.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"75 60 60 170","offer_id":49739999871252,"sku":"75 60 60 170","price":945.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250602_165154.jpg?v=1771216352"},{"product_id":"azurite-1-malachite-crystals-minerals-crystals2collect-rocks","title":"AZURITE with MALACHITE, Yuangchuen, Guangdong, PRC (miniature)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eAzurite\u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003e has the chemical formula Cu3(CO3)2(OH)2, with copper(II) cations bonded to both carbonate and hydroxide anions. It is one of two relatively common basic copper(II) carbonate minerals, the other being the bright green malachite. Aurichalcite, on the other hand, is a rare basic carbonate mineral containing copper and zinc. Simple copper carbonate (CuCO3) is not found in nature due to the strong affinity of the Cu2+ ion for the hydroxide anion HO−. \u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eMalachite\u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003e is a mineral composed of copper carbonate hydroxide, represented by the chemical formula Cu2CO3(OH)2. This opaque mineral features distinctive green bands and crystallizes within the monoclinic system. It typically forms in botryoidal, fibrous, or stalagmitic shapes in fractures and subterranean environments, where the presence of hydrothermal fluids and the water table facilitate chemical precipitation. While individual crystals are uncommon, they can appear as slender or acicular prisms, and pseudomorphs resembling more tabular or blocky azurite crystals are also found.\u003c\/span\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-AU\"\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"49 36 20 59","offer_id":49740000002324,"sku":"49 36 20 59","price":245.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250219_084802.jpg?v=1772791482"},{"product_id":"azurite-2-malachite-crystals-minerals-crystals2collect-rocks","title":"AZURITE ROSE, ZAIRE (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eAzurite\u003c\/strong\u003e has the chemical formula Cu3(CO3)2(OH)2, with copper(II) cations bonded to both carbonate and hydroxide anions. It is one of two relatively common basic copper(II) carbonate minerals, the other being the bright green malachite. Aurichalcite, on the other hand, is a rare basic carbonate mineral containing copper and zinc. Simple copper carbonate (CuCO3) is not found in nature due to the strong affinity of the Cu2+ ion for the hydroxide anion HO−.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003eThis specimen exhibits a significantly darker coloration (ed to emphasize its structure).\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"60 50 50  324","offer_id":49740000035092,"sku":"60 50 50  324","price":375.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_3474.jpg?v=1772791506"},{"product_id":"azurite-3-malachite-crystals-minerals-crystals2collect-rocks","title":"AZURITE NAMIBIA (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eAzurite\u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003e, also referred to as Azure spar, is a soft, vibrant blue copper mineral formed through the weathering of copper ore deposits. In the early 19th century, it was commonly called chessylite, named after its type locality in Chessy-les-Mines, near Lyon, France. This mineral, characterized by the basic carbonate formula Cu3(CO3)2(OH)2, has a long history, having been noted in ancient texts such as Pliny the Elder's Natural History, where it was identified by the Greek term kuanos, meaning \"deep blue,\" and the Latin term caeruleum. The blue hue of azurite is attributed to the presence of copper ions.\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"59 34 46  99","offer_id":49740000067860,"sku":"59 34 46  99","price":195.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250128_131704.jpg?v=1772791527"},{"product_id":"azurite-5-limonite-crystals-minerals-crystals2collect-rocks-malachite-crystals-minerals-crystals2collect-rocks","title":"AZURITE on LIMONITE, MORENCI, GREENLEE COUNTY, ARIZONA, USA (cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eAzurite\u003c\/strong\u003e has the chemical formula Cu3(CO3)2(OH)2, with copper(II) cations bonded to both carbonate and hydroxide anions. It is one of two relatively common basic copper(II) carbonate minerals, the other being the bright green malachite. Aurichalcite, on the other hand, is a rare basic carbonate mineral containing copper and zinc. Simple copper carbonate (CuCO3) is not found in nature due to the strong affinity of the Cu2+ ion for the hydroxide anion HO−.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eLimonite\u003c\/strong\u003e is an iron ore made up of a blend of hydrated iron(III) oxide-hydroxides with varying compositions. While it is often represented by the formula FeO(OH)·nH2O, this depiction is misleading since the proportions of oxide to hydroxide can differ significantly.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"80 70 70  232","offer_id":49740000133396,"sku":"80 70 70  232","price":359.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_3488.jpg?v=1772791569"},{"product_id":"barite-1-baryte-crystals-minerals-crystals2collect-rocks","title":"BARYTE BLUE, Mibladen MOROCCO (SMALL CABINET)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eBaryte,\u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003e also known as barite or barytes, is a mineral composed of barium sulfate (BaSO4). Typically appearing white or colorless, barite serves as the primary source of barium. The baryte group includes barite, celestine (strontium sulfate), anglesite (lead sulfate), and anhydrite (calcium sulfate), with barite and celestine forming a solid solution represented as (Ba,Sr)SO4.\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"60 40 40 112","offer_id":52401696538900,"sku":"60 40 40 112","price":195.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250118_171339.jpg?v=1772791640"},{"product_id":"barite-2-baryte-calcite-sphalerite-crystals-minerals-crystals2collect-rocks","title":"BARYTE,  CALCITE and SPHALERITE, MOROCCO (LARGE CABINET)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eBaryte,\u003c\/b\u003e also known as barite or barytes, is a mineral composed of barium sulfate (BaSO4). Typically appearing white or colorless, barite serves as the primary source of barium. The baryte group includes barite, celestine (strontium sulfate), anglesite (lead sulfate), and anhydrite (calcium sulfate), with barite and celestine forming a solid solution represented as (Ba,Sr)SO4.\u003cbr\u003e\u003cb\u003e\u003cbr\u003eSphalerite,\u003c\/b\u003e a sulfide mineral represented by the chemical formula (Zn, Fe)S, serves as the principal ore for zinc extraction. This mineral occurs in various types of deposits, predominantly within sedimentary exhalative, Mississippi-Valley type, and volcanogenic massive sulfide formations. It is commonly associated with other minerals such as galena, chalcopyrite, pyrite, as well as calcite, dolomite, quartz, rhodochrosite, and fluorite.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003eCalcite \u003c\/b\u003eis a carbonate mineral and the most stable form of calcium carbonate (CaCO3). It is widely found, especially as a key element in limestone. With a hardness rating of 3 on the Mohs scale, calcite is assessed based on its ability to be scratched. Large crystals of calcite are utilized in optical devices, while limestone, primarily made up of calcite, serves a variety of purposes. This calcite turns yellow in long wave UV.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"125 100 90 1184","offer_id":49740000231700,"sku":"125 100 90 1184","price":1135.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250110_120007.jpg?v=1772791664"},{"product_id":"benitoite-2-neptunite-joaquinite-natrolite-serpentine-crystals-minerals-crystals2collect-rocks","title":"BENITOITE with NEPTUNITE, JOAQUINTE on NATROLITE and SERPENTINE, SAN BENITO COUNTY, BENITOITE GEM MT DIABLO, CA, USA","description":"\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eBenitoite\u003c\/strong\u003e is a rare blue mineral composed of barium titanium cyclosilicate, primarily located in hydrothermally altered serpentinite. It forms in the high-pressure, low-temperature conditions characteristic of subduction zones at convergent plate boundaries. Under short-wave ultraviolet light, benitoite fluoresces a bright blue to bluish white, while the less common clear to white crystals exhibit a red fluorescence under long-wave UV light.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003eDiscovered in 1907 by prospector James M. Couch in the San Benito Mountains of California, it was initially mistaken for sapphire due to its color. In 1909, Dr. George D. Louderback at the University of California, Berkeley, identified it as a new mineral, naming it benitoite after the nearby San Benito River. While benitoite is found in various locations worldwide, high-quality gemstones have only been sourced from the Benito Gem Mine in California. Other occurrences have been noted in Montana, Arkansas, Japan, and Australia, but these specimens are generally smaller and considered accessory minerals. In 1985, benitoite was designated as California's official state gem. The mineral typically crystallizes in a hexagonal structure, with non-gem varieties occasionally exhibiting a rare six-pointed twinned form.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003eNeptunite\u003c\/b\u003e is a silicate mineral characterized by the formula KNa2Li(Fe2+, Mn2+)2Ti2Si8O24. It forms a series with mangan-neptunite as manganese content increases, while watatsumiite is a variant where vanadium substitutes titanium in the composition. First identified in 1893 from the Narssârssuk pegmatite in West Greenland, neptunite is also located in natrolite veins within glaucophane schist in San Benito County, California, as well as in Mont Saint-Hilaire, Quebec, and the Kola Peninsula in Russia. The mineral derives its name from Neptune, the Roman god of the sea, due to its connection with aegirine, named after Àgir, the Scandinavian sea deity.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eJoaquinite\u003c\/strong\u003e, with the chemical formula (Ce), NaBa2Ce2FeTi2[Si4O12]2O2(OH,F) · H2O, is an exceptionally rare silicate mineral that contains cerium and exhibits a honey-yellow to brown hue along with a vitreous luster. It was named in 1909 by G.D. Louderback and W.C. Blasdale, referencing the Joaquin Ridge in the Diablo Range, the site of its discovery, which also borders the San Joaquin Valley. The name reflects its cerium content, a designation added by Nickel \u0026amp; Mandarino in 1987.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eNatrolite\u003c\/strong\u003e is a mineral species classified as a tectosilicate and is part of the zeolite group. Its chemical composition is represented by the formula Na2Al2Si3O10·2H2O, indicating it is a hydrated sodium and aluminum silicate. The mineral was first identified in Hohentwiel, Hegau, Germany, which serves as its type locality.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"50 40 30 37","offer_id":49740000461076,"sku":"50 40 30 37","price":2750.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250602_092916.jpg?v=1772791754"},{"product_id":"benitoite-3-neptunite-joaquinite-natrolite-crystals-minerals-crystals2collect-rocks","title":"BENITOITE (BLUE), NEPTUNITE (BLACKISH RED), JOAQUINITE (BROWN) on NATROLITE (WHITE), SAN BENITO COUNTY, BENITOITE GEM MT DIABLO, CA, USA (miniature)","description":"\u003cp\u003e\u003cstrong\u003eBenitoite\u003c\/strong\u003e, \u003cspan\u003eBaTi(Si\u003c\/span\u003e\u003csub\u003e3\u003c\/sub\u003e\u003cspan\u003eO\u003c\/span\u003e\u003csub\u003e9\u003c\/sub\u003e\u003cspan\u003e), \u003c\/span\u003eis an extremely rare blue mineral composed of barium titanium cyclosilicate, primarily located in hydrothermally altered serpentinite. It forms in the high-pressure, low-temperature conditions characteristic of subduction zones at convergent plate boundaries. Under short-wave ultraviolet light, benitoite fluoresces a bright blue to bluish white, while the less common clear to white crystals exhibit a red fluorescence under long-wave UV light.\u003c\/p\u003e \u003cp\u003eDiscovered in 1907 by prospector James M. Couch in the San Benito Mountains of California, it was initially mistaken for sapphire due to its color. In 1909, Dr. George D. Louderback at the University of California, Berkeley, identified it as a new mineral, naming it benitoite after the nearby San Benito River. While benitoite is found in various locations worldwide, high-quality gemstones have only been sourced from the Benito Gem Mine in California. Other occurrences have been noted in Montana, Arkansas, Japan, and Australia, but these specimens are generally smaller and considered accessory minerals. In 1985, benitoite was designated as California's official state gem. The mineral typically crystallizes in a hexagonal structure, with non-gem varieties occasionally exhibiting a rare six-pointed twinned form.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eNeptunite\u003c\/strong\u003e is a silicate mineral characterized by the chemical formula KNa2Li(Fe2+, Mn2+)2Ti2Si8O24. It forms a series with mangan-neptunite as manganese content increases, while watatsumiite is a variant where vanadium substitutes titanium in the structure. First identified in 1893 from the Narssârssuk pegmatite in West Greenland, neptunite is also located in natrolite veins within glaucophane schist in San Benito County, California, as well as in Mont Saint-Hilaire, Quebec, and the Kola Peninsula in Russia. The mineral derives its name from Neptune, the Roman god of the sea, due to its connection with aegirine, which is linked to Àgir, the Scandinavian sea deity.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eJoaquinite\u003c\/strong\u003e, with the chemical formula (Ce), NaBa2Ce2FeTi2[Si4O12]2O2(OH,F) · H2O, is an exceptionally rare silicate mineral that contains cerium and exhibits a honey-yellow to brown hue along with a vitreous luster. It was named in 1909 by G.D. Louderback and W.C. Blasdale, referencing the Joaquin Ridge in the Diablo Range, the site of its discovery, which also borders the San Joaquin Valley. The name reflects its cerium content, a designation added by Nickel \u0026amp; Mandarino in 1987.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eNatrolite\u003c\/strong\u003e is a mineral species classified as a tectosilicate and is part of the zeolite group. Its chemical composition is represented by the formula Na2Al2Si3O10·2H2O, indicating it is a hydrated sodium and aluminum silicate. The mineral was first identified in Hohentwiel, Hegau, Germany, which serves as its type locality. \u003c\/p\u003e \u003cp\u003eThe term \"natrolite\" was introduced by Martin Heinrich Klaproth in 1803, deriving from the Greek words for soda (natron) and stone (lithos), reflecting its sodium content. Informally, it is also known as needle stone or needle-zeolite, a reference to the slender, acicular crystals that often form in divergent clusters. These crystals can frequently exhibit epitaxial overgrowths of natrolite, mesolite, and gonnardite in various arrangements.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"45 20 32 28","offer_id":49740000493844,"sku":"45 20 32 28","price":10500.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250113_075227.jpg?v=1772791806"},{"product_id":"beryl-1","title":"BERYL VAR AQUAMARINE on QUARTZ, Carnaiba, BRAZIL (LARGE CABINET)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eBeryl\u003c\/b\u003e is a mineral made up of beryllium aluminum silicate, represented by the chemical formula Be3Al2Si6O18. Notable varieties of beryl include emerald and aquamarine. This mineral can form naturally occurring hexagonal crystals that may reach several meters in length, although well-terminated specimens are uncommon. While pure beryl is colorless, it often exhibits various hues due to impurities, including green, blue, yellow, pink, and the rare red. Beryl serves as an important ore for beryllium.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003eThe crystal on this specimen is about 110 mm x 30 mm. Acquired on 1 July 1988.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"130 100 90  1441","offer_id":52401694867732,"sku":"130 100 90  1441","price":465.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241227_164654.jpg?v=1772791839"},{"product_id":"beryl-11-aquamarine-muscovite-crystals-minerals-crystals2collect-rocks","title":"BERYL (TABULAR) VAR AQUAMARINE on MUSCOVITE (MICA), PING WU BERYL MINE XUEBAODING PINGWU CO MIANYANG SICHUAN PROV PRC (small cabinet)","description":"\u003cp\u003eTABULAR BERYL (AQUAMARINE) , MICA\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eBeryl\u003c\/strong\u003e is a mineral made up of beryllium aluminum silicate, represented by the chemical formula Be3Al2Si6O18. Notable varieties of beryl include emerald and aquamarine. This mineral can form naturally occurring hexagonal crystals that may reach several meters in length, although well-terminated specimens are uncommon. While pure beryl is colorless, it often exhibits various hues due to impurities, including green, blue, yellow, pink, and the rare red. Beryl serves as an important ore for beryllium.\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eMuscovite, commonly referred to as common mica, isinglass, or potash mica, is a hydrated phyllosilicate mineral composed of aluminum and potassium, represented by the chemical formula KAl2(AlSi3O10)(F,OH)2, or (KF)2(Al2O3)3(SiO2)6(H2O). This mineral is characterized by its exceptional basal cleavage, allowing it to produce extremely thin and often highly flexible sheets.\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"90 45 53 190","offer_id":49740000592148,"sku":"90 45 53 190","price":425.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_2504_a1e9a30c-9729-45fd-a5e8-beb318fc526a.jpg?v=1772791854"},{"product_id":"beryl-4-crystals-minerals-crystals2collect-rocks","title":"BERYL, LARGE CRYSTAL, Carnaiba, BRAZIL (cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eBeryl\u003c\/b\u003e is a mineral made up of beryllium aluminum silicate, represented by the chemical formula Be3Al2Si6O18. Notable varieties of beryl include emerald and aquamarine. This mineral can form naturally occurring hexagonal crystals that may reach several meters in length, although well-terminated specimens are uncommon. While pure beryl is colorless, it often exhibits various hues due to impurities, including green, blue, yellow, pink, and the rare red. Beryl serves as an important ore for beryllium.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"70 30 30 300","offer_id":49740000919828,"sku":"70 30 30 300","price":250.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250109_164744.jpg?v=1772791864"},{"product_id":"fluorite-quartz-biotite-crystals-minerals-crystals2collect-rocks","title":"FLUORITE (BLUE) WITH QUARTZ AND BIOTITE, HUNAN, PRC (cabinet)","description":"\u003cp class=\"MsoNormal\"\u003eFluorite, known as fluorspar, is the mineral variant of calcium fluoride, represented by the formula CaF2. This mineral is classified within the halide group and typically forms in an isometric cubic structure, though octahedral and other intricate isometric shapes can also be found. According to the Mohs scale of mineral hardness, fluorite is assigned a hardness value of 4, determined through scratch resistance comparisons.\u003cbr\u003e\u003cbr\u003eThe fluorite crystals are hard to catch on the photo as they are water clear.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"100 80 70  609","offer_id":49740001018132,"sku":"100 80 70  609","price":395.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_3134.jpg?v=1779189091"},{"product_id":"beryl-6","title":"BERYL VAR AQUAMARINE ON MUSCOVITE FISHTAIL and DOLOMITE, GILGIT, PAKISTAN (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eBeryl\u003c\/b\u003e is a mineral made up of beryllium aluminum silicate, represented by the chemical formula Be3Al2Si6O18. Notable varieties of beryl include emerald and aquamarine. This mineral can form naturally occurring hexagonal crystals that may reach several meters in length, although well-terminated specimens are uncommon. While pure beryl is colorless, it often exhibits various hues due to impurities, including green, blue, yellow, pink, and the rare red. Beryl serves as an important ore for beryllium.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"80 70 50 173","offer_id":49740001050900,"sku":"80 70 50 173","price":1700.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250611_170649.jpg?v=1779189198"},{"product_id":"beryl-7-emerald-crystals-minerals-crystals2collect-rocks","title":"BERYL var EMERALD, COLOMBIA (thumbnail)","description":"\u003cp\u003e\u003cstrong\u003eBeryl\u003c\/strong\u003e is a mineral made up of beryllium aluminum silicate, represented by the chemical formula Be3Al2Si6O18. Notable varieties of beryl include emerald and aquamarine. This mineral can form naturally occurring hexagonal crystals that may reach several meters in length, although well-terminated specimens are uncommon. While pure beryl is colorless, it often exhibits various hues due to impurities, including green, blue, yellow, pink, and the rare red. Beryl serves as an important ore for beryllium.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"14.4 11.2 8","offer_id":49740001083668,"sku":"14.4 11.2 8","price":255.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250322_122504.jpg?v=1779189223"},{"product_id":"beryl-9-aquamarin-crystals-minerals-crystals2collect-rocks","title":"BERYL var AQUAMARINE, Minas Gerais, BRAZIL (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eBeryl\u003c\/strong\u003e is a mineral made up of beryllium aluminum silicate, represented by the chemical formula Be3Al2Si6O18. Notable varieties of beryl include emerald and aquamarine. This mineral can form naturally occurring hexagonal crystals that may reach several meters in length, although well-terminated specimens are uncommon. While pure beryl is colorless, it often exhibits various hues due to impurities, including green, blue, yellow, pink, and the rare red. Beryl serves as an important ore for beryllium.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"80 60 50  218","offer_id":49740001181972,"sku":"80 60 50  218","price":175.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250322_104655.jpg?v=1779189231"},{"product_id":"bloedite-blodite-halite-crystals-rocks-minerals","title":"BLÖDITE with HALITE, SODA LAKE, SAN LUIS OBISPO COUNTY, CA, USA (miniature)","description":"\u003cp\u003e\u003cstrong\u003eBlödite\u003c\/strong\u003e, also known as bloedite, is a hydrated sodium magnesium sulfate mineral characterized by the formula Na2Mg(SO4)2·4H2O. This mineral typically appears clear to yellow, often exhibiting darker shades due to inclusions, and it crystallizes in a monoclinic structure.\u003c\/p\u003e \u003cp\u003eThe first description of Blödite dates back to 1821, when it was identified in a salt deposit located in Ischler Salzberg, Bad Ischl, Gmunden, Austria. It was named in honor of the German mineralogist and chemist Karl August Blöde (1773–1820).[3][4]\u003c\/p\u003e \u003cp\u003eBlödite can be found globally in evaporitic sedimentary settings, including the Great Salt Lake in Utah.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eHalite\u003c\/strong\u003e is also known as \"stone salt\", NaCl.\u003cbr\u003e\u003cbr\u003eThis specimen has been treated against decay ad stabilized.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"65 50 65 30","offer_id":49740001313044,"sku":"65 50 65 30","price":85.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250616_105537.jpg?v=1779189248"},{"product_id":"boleite-5-crystals-minerals-crystals2collect-rocks","title":"BOLEITE ON MATRIX, SANTA ROSALIA, BAJA, CALIFORNIA, MEXICO","description":"\u003cp\u003e\u003cstrong\u003eBoleite\u003c\/strong\u003e is a rare, complex halide mineral represented by the formula KPb26Ag9Cu24(OH)48Cl62. Initially identified in 1891 as an oxychloride mineral, it crystallizes in deep-blue cubes and belongs to the isometric category. Several related minerals, including pseudoboleite, cumengite, and diaboleite, share its intricate crystal structure and exhibit similar bright-blue cubic forms. These minerals typically form in altered areas of lead and copper deposits, resulting from the interaction of chloride-rich solutions with primary sulfide minerals.\u003c\/p\u003e \u003cp\u003eThe external characteristics of boleite reveal its cubic crystal structure, placing it within the isometric crystal class. It exhibits perfect cleavage along the [001] direction and displays a very dark glossy blue hue, accompanied by a light greenish-blue streak. Twinning is prominently observed through notches at the interpenetrated angles, leading to a pseudocubic penetration twinning habit at three mutually perpendicular angles. Boleite crystals can reach sizes exceeding half an inch on each side, featuring pseudo-octahedral tetragonal dipyramids.\u003c\/p\u003e \u003cp\u003eThe crystal on this specimen is about 4.5 mm.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"42  23 30 17","offer_id":49740001542420,"sku":"42  23 30 17","price":425.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250116_162517.jpg?v=1779189262"},{"product_id":"brochantite-crystals-minerals-crystals2collect-rocks","title":"BROCHANTITE, BINGHAM, Hansonburg District, Sorocco Co, New Mexico | MEX TEXX MINE, USA (small cabinet)","description":"\u003cp\u003e\u003cstrong\u003eBrochantite\u003c\/strong\u003e is a sulfate mineral classified among various cupric sulfates, with the chemical formula Cu4SO4(OH)6. It typically forms in arid environments or in areas where copper sulfide deposits undergo rapid oxidation. The mineral was named by Armand Lévy in honor of the French geologist and mineralogist A. J. M. Brochant de Villiers. \u003c\/p\u003e \u003cp\u003eThe crystals of brochantite exhibit a color range from emerald-green to black-green and blue-green, and they can appear either acicular or prismatic. This mineral is frequently found in association with others such as malachite, azurite, and chrysocolla, and it may also create pseudomorphs with these associated minerals.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"61 48 35  121","offer_id":49740001575188,"sku":"61 48 35  121","price":295.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250111_104349_2d9b7419-a1b4-44c0-906e-fb6af09fdc8f.jpg?v=1779189285"},{"product_id":"brookite-2-crystals-minerals-crystals2collect-rocks-pseudobrookite","title":"PSEUDOBROOKITE , THOMAS RANGE, JUAB COUNTY, UTAH, USA (small cabinet) CHECK THE MICROSCOPICAL PICTURES","description":"\u003cp\u003e\u003cstrong\u003ePseudobrookite \u003c\/strong\u003eis a mineral composed of iron titanium oxide, represented by the chemical formula Fe2TiO5 or (Fe3+,Fe2+)2(Ti,Fe2+)O5. It was first identified in 1878 at Uroi Hill (also known as Arany Hill) in Simeria, Hunedoara County, Romania. The name derives from the Greek word for \"false,\" reflecting its deceptive resemblance to brookite. Pseudobrookite typically forms through pneumatolytic processes and alteration within titanium-rich volcanic rocks, including andesite, rhyolite, and basalt, and is often found in association with xenoliths within these volcanic materials. Additionally, it is frequently located in lithophysae.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"65 45 60 175","offer_id":49740001673492,"sku":"65 45 60 175","price":450.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250531_140038.jpg?v=1779189325"},{"product_id":"brucite-1-crystals-minerals-crystals2collect-rocks","title":"BRUCITE, PHALABORWA, TRANSVAAL, SOUTH AFRICA (thumbnail)","description":"\u003cp\u003e\u003cstrong\u003eBrucite\u003c\/strong\u003e is the mineral variant of magnesium hydroxide, represented by the chemical formula Mg(OH)2. It commonly forms as an alteration product of periclase in marble and serves as a low-temperature hydrothermal vein mineral found in metamorphosed limestones and chlorite schists. Additionally, brucite is produced during the serpentinization process of dunites. This mineral is frequently associated with other minerals such as serpentine, calcite, aragonite, dolomite, magnesite, hydromagnesite, artinite, talc, and chrysotile. Structurally, brucite features a layered arrangement similar to CdI2, with hydrogen bonds connecting the layers.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eBrucite\u003c\/strong\u003e was first identified in 1824 by François Sulpice Beudant and was named in honor of the American mineralogist Archibald Bruce, who lived from 1777 to 1818. A fibrous form of brucite, known as nemalite, appears in elongated fibers or laths, typically aligned along the [1010] direction, though it can also be found in the [1120] crystalline direction.\u003cbr\u003e\u003cbr\u003e2 pieces in this lot. Stand not included.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"20 5 10 51","offer_id":52538275234068,"sku":"20 5 10 51","price":285.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250320_161334.jpg?v=1779189373"},{"product_id":"bixbyite-crystals-minerals-crystals2collect-rocks-euhedral-isometric","title":"BIXBYITE (EUHEDRAL ISOMETRIC), THOMAS RANGE, JUAB COUNTY, UTAH, USA MINIATURE","description":"\u003cp\u003e\u003cstrong\u003eBixbyite \u003c\/strong\u003eis a manganese iron oxide mineral represented by the chemical formula (Mn,Fe)2O3. The ratio of iron to manganese can vary significantly, with many samples containing little to no iron. This mineral appears as a metallic dark black and has a Mohs hardness ranging from 6.0 to 6.5. Bixbyite is relatively rare and is prized by collectors for its tendency to form euhedral isometric crystals, which can take the shape of cubes, octahedra, and dodecahedra.\u003c\/p\u003e \u003cp\u003eIt is typically found in association with minerals such as beryl, quartz, spessartine, hematite, pseudobrookite, hausmannite, braunite, and topaz within pneumatolytic or hydrothermal veins and cavities, as well as in metamorphic rocks. Additionally, it can occur in lithophysal cavities within rhyolite. Notable locations for bixbyite include the Jhabua and Chhindwara districts in India and the Thomas Range in Juab County, Utah, with occurrences also reported in San Luis Potosi, Mexico; northern Patagonia, Argentina; Girona, Catalonia, Spain; Sweden, Germany, Namibia, Zimbabwe, and South Africa.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"25 13 8 5","offer_id":52538273267988,"sku":"25 13 8 5","price":495.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250227_143615.jpg?v=1779189379"},{"product_id":"calaverite-1-gold-tellurite-crystals-minerals-crystals2collect-rocks","title":"CALAVERITE GOLD TELLURITE, AJAX MINE, CRIPPLE CREEK, COLORADO, USA (thumbnail)","description":"\u003cp\u003e\u003cstrong\u003eCalaverite\u003c\/strong\u003e, also known as gold telluride, is a rare metallic mineral characterized by the chemical formula AuTe2, with about 3% of its gold content substituted by silver. Discovered in 1861 in Calaveras County, California, it was named after the county in 1868. This mineral typically exhibits a metallic sheen and can appear in colors ranging from silvery white to brassy yellow. It is closely associated with sylvanite, another gold-silver telluride, which contains a higher silver content. Additionally, krennerite is another mineral with the same formula but differing crystal structure. While calaverite and sylvanite are the primary telluride ores of gold, they are relatively minor sources of gold overall. Notably, calaverite was significant during the gold rushes in Western Australia in the 1890s. \u003c\/p\u003e \u003cp\u003eIn terms of physical and chemical properties, calaverite forms monoclinic crystals that lack cleavage planes, exhibiting a specific gravity of 9.35 and a hardness of 2.5. The mineral is soluble in concentrated sulfuric acid, and when treated with hot sulfuric acid, it dissolves to produce a spongy mass of gold suspended in a red tellurium solution.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"14.5 20 5 50","offer_id":52538273005844,"sku":"14.5 20 5 50","price":465.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250414_134357.jpg?v=1779189390"},{"product_id":"calcite-11-crystals-minerals-crystals2collect-rocks","title":"CALCITE (DOG TOOTH), BECKE-OESE, GERMANY, TRANSPARANT (large cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eCalcite \u003c\/b\u003eis a carbonate mineral and the most stable form of calcium carbonate (CaCO3). It is widely found, especially as a key element in limestone. With a hardness rating of 3 on the Mohs scale, calcite is assessed based on its ability to be scratched. Large crystals of calcite are utilized in optical devices, while limestone, primarily made up of calcite, serves a variety of purposes.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"140 125 60 716","offer_id":49740259688724,"sku":"140 125 60 716","price":315.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241230_115524.jpg?v=1779189398"},{"product_id":"calcite-12-crystals-minerals-crystals2collect-rocks-pyrite","title":"CALCITE with PYRITE, FRENCH ALPS, FRANCE (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003ePyrite\u003c\/strong\u003e, commonly referred to as fool's gold, is an iron sulfide with the chemical formula FeS2, also known as iron (II) disulfide. It is the most prevalent sulfide mineral found in nature.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCalcite\u003c\/strong\u003e is a carbonate mineral and the most stable form of calcium carbonate (CaCO3). It is widely found, especially as a key element in limestone. With a hardness rating of 3 on the Mohs scale, calcite is assessed based on its ability to be scratched. Large crystals of calcite are utilized in optical devices, while limestone, primarily made up of calcite, serves a variety of purposes.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"65 55 25 76","offer_id":49740001968404,"sku":"65 55 25 76","price":95.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_2712.jpg?v=1779189422"},{"product_id":"calcite-13-crystals-minerals-crystals2collect-rocks-chalcopyrite","title":"CALCITE with CHALCOPYRITE (cabinet)","description":"\u003cp\u003ecovered with chalcopyrite and or hematite.\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eCalcite is a carbonate mineral and the most stable form of calcium carbonate (CaCO3). It is widely found, especially as a key element in limestone. With a hardness rating of 3 on the Mohs scale, calcite is assessed based on its ability to be scratched. Large crystals of calcite are utilized in optical devices, while limestone, primarily made up of calcite, serves a variety of purposes.\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"125 90 50","offer_id":49740002001172,"sku":"125 90 50","price":275.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_2826.jpg?v=1779189442"},{"product_id":"calcite-1-crystals-minerals-crystals2collect-rocks","title":"CALCITE, Holzen, GERMANY (LARGE CABINET)","description":"\u003cp\u003e\u003cstrong\u003ePhantom\u003c\/strong\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003eCalcite is a carbonate mineral and the most stable form of calcium carbonate (CaCO3). It is widely found, especially as a key element in limestone. With a hardness rating of 3 on the Mohs scale, calcite is assessed based on its ability to be scratched. 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