Accredited Gemological Schools:
Gemological Institute of America
Gemmological Association of Great Britain
Deutsche Gemmologische Gesellschaft
Asian Institute of Gemmological Sciences
Canadian Institute of Gemmology
Canadian Gemmological Association

Gem and Gemology Sites:
GemologyOnline
Vince Pardieu's "From the Mine to the Gem Lab"
American Gem Trade Association
Geminterest
The Gemology Project
Gemmology in Scotland
International Colored Stone Association
Writings from Richard Hughes
American Gem Society
Gemlab, Inc: The Home of Ted Themelis
Gems&Gemology; 24 year Subject Index A-H
Gems&Gemology; 24 year Subject Index I-Z
TheAustralian Gemologist

Diamond Information Sites:
Famous Diamonds

Gem Cutting
US Facetor's Guild
Delta One Lapidary Supplies

Mineralogy & Crystallography Sites:
Web Mineral
Mineralogy Database
Gemology: Links for Mineralogists
Inclusions in Quartz
Rock Identification Key
Mineral Identification Key

Jewelry Related Sites:
Ganoskin: Orchid
Lang Antiques, Antique Jewelry & Estate Jewelry

Industry News Links:
Pala Gem News
The Gemstone Forecaster Newsletter

Appraisal Organizations:
National Association of Jewelry Appraisers
International Society of Appraisers
American Society of Appraisers
American Gem Society

Gemological Instruments -
Manufactures & Suppliers

Gemstone Press
GIA/Gem Instruments
Kassoy
Mineralab
OGI
Pretty Rock.com
Sarin
Stuller

The Curious Lore of Precious Stones:
by George Frederick Kunz

Gemstone Buying Guide: A Guide to Buying
by Renee Newman