![38.13 CTS GEM SILICA FROM BRAZIL -ROUGH [F8644]](https://www.opalrayjewelry.com/wp-content/uploads/2025/12/38-13-cts-gem-silica-from-brazil-rough-f8644-tajfcpab83781.webp)
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
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![310.00 CTS ‘STAR BURST‘ RUTILATED QUARTZ ROUGH [FLA166]](https://www.opalrayjewelry.com/wp-content/uploads/2025/12/310-00-cts-star-burst-rutilated-quartz-rough-fla166-aginalja92522.webp)
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