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Category:	All Categories>topics>natural resources>nonrenewable resources>mineral resources>nonmetallic resources>gem resources
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Here are some USGS Web pages with more information on gem resources and Anywhere:

Natural gemstones Online booklet on natural gemstones, terminology, geologic environment, birthstones, U.S. production, chemical formulas, and references. (Score: 1.000)

Gemstones Statistics and Information (Score: 0.690)

Western Region Mineral Resources Project listing Links to ongoing mineral resources projects in the Western Region of the United States plus links to offices and staff of the Western Mineral Resources Team. (Score: 0.668)

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About gem resources:

Definition: Deposits of unfashioned natural gem material. [Glossary of Geology, 4th ed.]