Gemstone
Links
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."
Gemstone Forecaster Newsletters
http://www.preciousgemstones.com/Forecasters.html
Analyzes Burma ruby and sapphire gems and collector gemstone markets.
NOVA
http://www.pbs.org/wgbh/nova/diamond/gemprimer.html
Gemstone primer with photos and vital information regarding gemstones.
Smithsonian Gem & Mineral Collection
http://www.min.uni-bremen.de/sgmcol/
Pictures and short descriptions of gems and minerals found at the Smithsonian.
University of Texas Gem Class
http://www.geo.utexas.edu/courses/347k/redesign/Gem_Notes/gemnote_triple_frame.htm
Gem and Mineral class at the University of Texas, Austin.
The Image
Mineral and gemstone galleries. Physical properties and historical facts for minerals and gemstones.
Larimar Museum
The Larimar Museum in Santo Domingo-scientific facts about the blue volcanic pectolite Larimar.
Gem Hut
Hundreds of descriptions for gems, minerals, and rare metals. Pictures, hardness, and composition.
Secrets of the Gem Trade. The Connoisseur's Guide To Precious Gemstones.
http://secretsofthegemtrade.com/
A new gem book by by R. W. Wise.
Gems and Precious Stones
http://ist-socrates.berkeley.edu/~eps2/
An on-line gem and jewelry course at UC Berkeley.
Photomicrography by Erik Carlson
http://www.gemstoneinclusions.com
Photomicrography of diamonds and other gemstones.
Secret Jewelry Collection
http://www.geocities.jp/senribb/jewels/
A Japanese collector's site of jewelry, minerals and gemstones.