Earth Sciences: Geology: Rocks and Minerals: Gemstone
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Bluechart
http://www.gembluechart.com/
A gem identification chart for $18.
Caribbean Gemological Institute
http://www.carigem.org/
Caribbean jewelers organization includes jewelry, shopping and travel tips..
Dan Dennis
http://www.dandennis.com/
Author of "Gems: A Lively Guide for the Casual Collector."
Fluorescent Minerals under Ultraviolet Light
http://home.pacifier.com/~leopard/
Descriptions and pictures of different gems and minerals under UV lights.
FTC
http://www.ftc.gov/bcp/guides/jewel-gd.htm
FTC Guides for jewelry and precious metals.
Gem Hut
http://www.gemhut.com/
Hundreds of descriptions for gems, minerals, and rare metals. Pictures, hardness, and composition.
Gemology Tools
http://www.gemologytools.com
Software for the professional gemologist or gemology student/enthusiast.
Gems and Precious Stones
http://ist-socrates.berkeley.edu/~eps2/
An on-line gem and jewelry course at UC Berkeley.
Gemstone Forecaster Newsletters
http://www.preciousgemstones.com/Forecasters.html
Analyzes Burma ruby and sapphire gems and collector gemstone markets.
GeoNord
http://www.geonord.org/
Gem and mineral site from Sweden.
Larimar Museum
http://www.larimarmuseum.com
The Larimar Museum in Santo Domingo-scientific facts about the blue volcanic pectolite Larimar.
National Gemstone
http://www.preciousgemstones.com/GEMCOLLECTING.HTML
Introduction to collecting and investing in gemstones and colored diamonds, with descriptions of the types most widely traded.
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