Gem Structure Table
How does a gem’s crystal system affect its properties? Consult our gem structure table to learn more about selected gemstones.
How does a gem’s crystal system affect its properties? Consult our gem structure table to learn more about selected gemstones.
A full and complete history of the lapidary arts, from 70,000 BC to present day. The origins of faceting, bruting, and carving.
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