GEM SILICA
There is no clear definition of the difference between gem silica & other agates, jaspers or chalcedony. Suffice to say, it is microcrystalline quartz, which draws its colours from chemical imperfections.View
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Showing 1 - 12 of 12 products
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Gem Silica & Chrysocolla Cabochon, Good Day mine, Arizona USA. 8.11 carats
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