Gem Focus – January 2023 – Featuring Fire Opal: A gem of flames

Posted on January 10, 2023 by Çiğdem Lüle, PhD, FGA, GIA GG, DGA

Opal is classified as a “mineraloid” or mineral-like in scientific terms. It is a silica-gel made out of microscopic spheres with water molecules in between, therefore an amorphous material. While opal is a widespread material…

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