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商品簡介
Serves as a reference guide to gem and ornamental materials, and outlines the features a gem tester has to know before making an identification. This book describes not only each natural gem species, but also their synthetic counterparts, and the materials used as imitations, demonstrating how to avoid costly mistakes.
作者簡介
Michael O’Donoghue is a Director of the Gemmological Association. He has written many books on gemmology. Louise Joyner is a fellow of the Gemmological Society and currently works in the Department of Scientific Research at the British Museum.
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