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January 1, 2013

The estimated value of natural gemstones produced from U.S. deposits during 2011 was $10.6 million, a 6-percent increase from 2010. U.S. gemstone production included agate, amber, beryl, coral, garnet, jade, jasper, opal, pearl, quartz, sapphire, shell, topaz, tourmaline, turquoise and many other gem materials.

Citation Information

Publication Year 2012
Title Gemstones
Authors D.W. Olson
Publication Type Article
Publication Subtype Journal Article
Series Title Mining Engineering
Index ID 70044892
Record Source USGS Publications Warehouse
USGS Organization National Minerals Information Center