International Gemological Society Bringing quality information and educational services to everyone interested in gemstones including professionals, the merely curious, and everyone in between.
Diamond-buying-made-easier.com An insider's diamond buying guide.... put together by an experienced Gemologist. An unbiased view on how to buy diamond rings, diamond jewelry, or diamond earrings
GemVal Online guide to gemstone prices Free access only to limited value charts.
The Vug Online Directory of Mineral & Fossil Sites
The Ganoksin ProjectThe gem and jewelry world's foremost information resource on the Internet. Open to the public, Free of charge - a substantial library of articles, publications, reports, and technical data on gem and jewelry related topics; as well as a sizable collection of art and jewelry galleries, for both the casual visitor and the professional.
Gemology Online is an interactive gemmological resource dedicated to a better understanding of the relationship between man and gemstones. Great forum and informational website!
MineDat.org Extensive online mineral database. Great forum for both experts and beginners.
Gemology Tools Professional
software that contains the most comprehensive gemology references available. This program is intended for the gemologist/appraiser, the gemology student or the casual gemstone enthusiast.