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Walter Schumann
Walter Schumann is a leading expert and researcher on gemstones. In addition to the perennially successful Gemstones of the World, first published in 1976, he has authored Collins Guide to Rocks, Minerals, and Gemstones and Handbook of Rocks, Minerals, and Gemstones, among other authoritative rock and mineral identification guides. Schumann lives in Germany.
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Gemstones of the World
Truly the ultimate one-volume book every hobbyist, jeweler, jewelry maker, and rockhound will ever need! Chock-full of more than 1,500 full-color photos showcasing each precious…