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Gems and Gem Minerals by Oliver C. Farrington
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Gems and Gem Minerals
by Oliver C. Farrington
Publisher: A. W. Mumford 1903
Number of pages: 302
Where do they come from? What are they made of? How can they be distinguished? What is their value? The subject as a whole has been treated from the mineralogical standpoint, as this affords the best basis for a thorough knowledge of gems.