GEMSTONES
California Tourmaline (Photo courtesy of Smithsonian Institution) |
|
U.S. Department of the Interior U.S. Geological Survey Minerals Information 988 National Center Reston, VA 20192 USA URL: http://minerals.usgs.gov/minerals/pubs/commodity/gemstones/sp14-95/index.html Maintained by: rcallaghan@usgs.gov Last modification: 17-Jul-2002@11:05 Privacy Statement || Disclaimer || FOIA || Accessibility |