Natural
Gemstones
Version 1.1
Key Terminology
Geologic Environment
Mineral Gemstones
Birthstones
Organic Gemstones
Buyer Beware
U.S. Production
Chemical Formulas
Contacts
References
End Notes
Quartz, Rhode Island
Photograph courtesy of The Smithsonian Institution
Related links:
Information on Rock and Mineral
Collecting
Education and Outreach
Gemstones -- Minerals Information
Geologic Information
This page is
URL:https://pubs.usgs.gov/gip/gemstones/
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Last modified 12-02-10 (jmw)