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Grain (gr)
spot fakes and detect dyed pearls
accurate measurements in both millimeters and inches
Both versions (digital and printed) include a comprehensive look at the science of gemmology
and online jewelry sellers
Rare Gemstones: How to Identify, Evaluate and Care for Unusual Gems Flexshafts & Accessories Grain (gr)Provides concise, interesting and practical details on uncommon gems that are now being used by designers to create distinctive jewelry. Besides listing the identification properties of the gems, Rare Gemstones tells you where they're found, how they're used, why they're unique, how they're priced, and how to evaluate and care for them. Rare Gemstones includes information on their history, treatments, imitations, durability, uses, quality