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Ch. 2: Precious Gem stones in 1891

Ch. 1: Gold and Silver in 1891 Page of 21 Ch. 2: Precious Gem stones in 1891 Text size:minus plus Restore normal size   Mail page  Print this page
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PRECIOUS STONES.
By George Frederick Kunz.
Introduction.—Since the last report on this subject was prepared, definite and systematic mining has been carried on at seven places in the United States, viz: Near Los Cerrillos and in Grant county, New Mexico, for turquoise with much success and profit; extensively for sapphire in connection with gold on the Missouri river, near Helena, Montana, with what commercial success is not known; for opal, with fair success, at Gem City, Washington State; for tourmaline at Mount Apatite and Mount Mica, both in Auburn, Maine, and for emeralds and lithia emerald in Alexander county, North Carolina, during 1891, but with little success.
Production.—The following table gives the output of the various gems and precious stones during 1891:
Product of rough gems before cutting, for the year 1891.
Ch. 1: Gold and Silver in 1891 Page of 21 Ch. 2: Precious Gem stones in 1891
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US Geol. Surv. 1891. Gemstones, Metals.
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