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The gemmological Association of Australia
The Gemmological Association of Australia (GAA) is Australia’s historic trade-accepted non-profit educational authority for gemmology. http://www.gem.org.au/
The Diamond High Council
The Diamond High Council (HRD) is the professional organization to defend and promote the interests of the Antwerp diamond trade and industry.
The Jewelry Information
A non-profit trade association funded by its members and the public.
Gemstone
ICA - International Colored Gemstone Association.
German Gemmological Association
Training and research in modern gemmology. Programs and fees, diamond grading, and enrollment.
Carigem International
Providing fine products, following FTC guidelines, and consumer information.