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Posts in Gemstones
Color encyclopedia of gemstones
GEMS Arem, Joel E. Color encyclopedia of gemstones. Van Nostrand Reinhold, 1977
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The gemstone identifier
GEMS Greenbaum, Walter W. The gemstone identifier. Prentice-Hall, 1988
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Colored gemstones: the buying guide
GEMS Matlins, Antoinette Colored gemstones: the buying guide. Gemstone, 2001
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Gem identification made easy
GEMS Matlins, Antoinette Gem identification made easy. Gemstone, 1989
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