Description
GEM SILICA
Gem silica is a bluish green to greenish blue variety of chalcedony that receives its vivid color from the presence of copper. It is often known as “chrysocolla chalcedony” or “gem silica chrysocolla.” … That is because it is a very rare gem.
Mined in Brazil
![60.20 CTS GEM SILICA FROM BRAZIL -ROUGH [F8654]](https://www.opalrayjewelry.com/wp-content/uploads/2025/12/60-20-cts-gem-silica-from-brazil-rough-f8654-zjsalifj32353.webp)



![33.35 CTS SUNSTONE ROUGH AUSTRALIA [F7172]](https://www.opalrayjewelry.com/wp-content/uploads/2025/12/33-35-cts-sunstone-rough-australia-f7172-hayrjzmc70895.webp)
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