The Authority in Color
As the world’s authority in color, the AGTA and its members lead the industry in educational resources, ethical practices, and the finest colored gemstones and cultured pearls.
Explore GemstonesDirectory
The AGTA Source Directory makes it easy for gemstone and jewelry professionals to get the information they need to purchase gemstones, jewelry, products and services from ethical and reliable suppliers.
Find a MemberAGTA Spectrum Awards
The industry's premier awards for color. Currently accepting entries for the 2018 competition. Deadline: June 29th, 2018
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We are committed to educating consumers and jewelry professionals about colored gemstones and cultured pearls.
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