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The encyclopedia of gemstones and minerals
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This work offers information on the properties/values of over 200 rocks, stones, jewels and other natural substances. From amber to zinc, and from diamond-edged blades to orthoclase-based porcelains, details about characteristic form, specific gravity, symmetry system, refraction, location, use and commercial value are provided.
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Melvil Decimal System (DDC)553.8 — Natural sciences and mathematics Earth sciences & geology Economic Geology Gems; Ornamental stones
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