SILVER, PLATINUM and PALLADIUM on bornite (small cabinet)

Silver is a chemical element with the symbol Ag (derived from the Latin argentum for 'silver', which in turn comes from the Proto-Ind-European root *h₂erǵ, meaning 'shiny' or 'white') and atomic number 47. This soft, white, lustrous transition metal displays the highest electrical conductivity, thermal conductivity, and reflectivity of all metals. Silver occurs naturally in the Earth's crust in its pure, free elemental form, referred to as "native silver," as well in alloys with gold and other metals, and in minerals such as argentite and chlorargyrite. The majority of silver is produced as a byproduct during the refining of copper, gold, lead, and zinc.

Platinum is a chemical element with the symbol Pt and atomic number 78. It is a dense, leable ductile, highly unreactive, precious, silver-white transition metal. The name derives from the Spanish term "platina," which is a diminutive form ofplata," meaning "little silver."

Palladium, represented by the symbol Pd and holding the atomic number 46, is a rare, lustrous metal with a silvery-white appearance. Discovered in 1802 by English chemist William Hyde Wollaston, it was named after the asteroid Pallas, which in turn was named after a title of the Greek goddess Athena, linked to her victory over Pallas. Palladium is part of the platinum group metals (PGMs), which also include platinum, rhodium, ruthenium, iridium, and osmium. While these elements share similar chemical characteristics, palladium is distinguished by having the lowest melting point and the least density among them.

Bornite, commonly referred to as peacock ore, is a sulfide mineral characterized by the chemical formula Cu5FeS4. It crystallizes in the orthorhombic system, exhibiting pseudo-cubic properties, and serves as a significant source of copper ore.