CORDIERIT, COROACI, MINAS GERAIS, BRASILIEN (Miniaturbild)
Cordierit, in der Gemmologie auch als Iolith bekannt, ist ein Ringsilikat, das sich aus Magnesium, Eisen und Aluminium zusammensetzt. Es enthält typischerweise Eisen und weist eine Mischkristallreihe zwischen magnesiumreichem Cordierit und eisenreichem Sekaninait auf, dargestellt durch die Reihenformel: (Mg,Fe)2Al3(Si5AlO18) bis (Fe,Mg)2Al3(Si5AlO18). Ein Hochtemperatur-Polymorph, Indialit, weist eine Struktur auf, die der von Beryll ähnelt und eine zufällige Verteilung von Aluminium innerhalb der (Si,Al)6O18-Ringe zeigt. Cordierit wird für Hochtemperaturanwendungen synthetisiert, darunter Katalysatoren und Pizzasteine.
Shipping & Returns
We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.
We want every customer to have a great experience shopping with us. If for any reason you’re not completely satisfied with your purchase, please reach out to our team — we’re here to help and will review every return request with care.
If your item arrives damaged, we kindly ask that you provide a short, continuous video showing the specimen from at least six angles. You can simply hold it in your hands and gently rotate it while filming. Please also include a clear view of the package label in the video so we can assist you as quickly as possible.
For all items reported as damaged or broken, we do require the item to be returned to us before a refund can be processed.
Return shipping costs are initially the responsibility of the customer. However, if your claim is approved after review, we will reimburse your reasonable return postage costs.
Our T&C's or policies prevail in case of a disagreement.
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