The Coscuez mine, one of a number in Colombia, is rapidly gaining significance as a major source of fine emeralds.
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Brazil has become a leading producer of emeralds; this article examines one of the most significant deposits.
Read MoreThis article reports on three gem materials currently being mined in Pakistan.
Read MoreThe higher the chromium content in synthetic emerald overgrowth, the darker the coating and appearance of the stone will be.
Read MoreA comprehensive review of the history and geology of Colombian emeralds together with descriptions of some of the most famous gems to come from this locality.
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