Gemstone

See also:

The Amber Ranch - Dominican rough blue amber for jewellers and collectors.
Bluechart - A gem identification chart for $18.
Caribbean Gemological Institute - Caribbean jewelers organization includes jewelry, shopping and travel tips..
Dan Dennis - Author of "Gems: A Lively Guide for the Casual Collector."
Florida Gold Coast & Mineral Society - Gold and Mineral Society in Florida.
FTC - FTC Guides for jewelry and precious metals.
Gem Hut - Hundreds of descriptions for gems, minerals, and rare metals. Pictures, hardness, and composition.
Gemology Tools - Software for the professional gemologist or gemology student/enthusiast.
Gems and Precious Stones - An on-line gem and jewelry course at UC Berkeley.
Gemstone Forecaster Newsletters - Analyzes Burma ruby and sapphire gems and collector gemstone markets.
GeoNord - Gem and mineral site from Sweden.
The Image - Mineral and gemstone galleries. Physical properties and historical facts for minerals and gemstones.
National Gemstone - Introduction to collecting and investing in gemstones and colored diamonds, with descriptions of the types most widely traded.
NOVA - Gemstone primer with photos and vital information regarding gemstones.
Secret Jewelry Collection - A Japanese collector's site of jewelry, minerals and gemstones.
Secrets of the Gem Trade. The Connoisseur's Guide To Precious Gemstones. - A new gem book by R. W. Wise.
University of Texas Gem Class - Gem and Mineral class at the University of Texas, Austin.