Gem Silica is a gem trade name for translucent blue-to-blue-green chalcedony colored by Chrysocolla rather than a separate mineral species. Explore its mineral science, trade-name and identification caveats, modern symbolic...
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Chrysocolla is a soft, hydrated copper aluminum silicate mineral with variable composition, typically forming blue-to-green botryoidal masses, crusts and vein fillings in oxidized copper deposits. Explore its mineral science, ancient...
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