The Gemological Institute of America, GIA, is the world's foremost authority in gemology, diamond grading, jewelry education, gemology research, diamond and gemstone grading reports and laboratory services.
International Colored Gemstone Association is the nonprofit trade association that represents the international colored gemstone industry, an extremely important and influential segment of the jewelry business. ICA has over 500 members in 46 countries worldwide.
Jewelers of America is the national trade association for businesses serving the fine jewelry retail marketplace. Jewelers of America works to improve consumer confidence in the jewelry industry.
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