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Birthstone Chart

What are the birthstones by month? January is garnet, February is amethyst, March is aquamarine, April is diamond, May is emerald, June is alexandrite,…

Gem Structure Chart

A gem structure chart that shows various information on a specific structure and gems of example. Details include Refractive Indexes, Pleochroism…

The History of Lapidary

A full and complete history of the lapidary arts, from 70,000 BC to present day. The origins of faceting, bruting, and carving.