Links

Mary van der Aa
Eclectic style, handmade jewelry. View the new Architect and Architect Sans collections featuring many custom-cut, and one-of-a-kind stones by Todd Wacks.

Gemological Institute of America
The world's foremost authority in gems and gemology.

Gemology Online
One of the industry's leading online gemology forums.

Gemology Project
Non-profit gemstone and gem science wiki-style database.

Mindat
Online mineralogy forum and database.

Gem-A
Thegemmological association of Great Britain.

American Gem Trade Association
The latest and greatest in spectacular, rare gemstones.

United States Faceters Guild
Tons of info for aspiring crystal machinists.