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The Rockhound's Geology & Mineralogy Resource Have a great site you want to share? 
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Optical Properties of Common Minerals Mineral & Lapidary Pronunciation
Gem, Mineral & Fossil Chart
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Suggested Reference Books Rocks Minerals & Gemstones by Walter Schumann "California Geology" Magazine issued by the State of California Recovery of Refining of Precious Metals by CW Ammen Gem Testing by B.W. Anderson Faceting for Amateurs by Glenn & Martha Vargas
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Santa Rosa Gem and Mineral Society is located in beautiful Sonoma County, California. |