The American Gem Society offers you superior diamond education and appraisal. Our certified gemstone and diamond experts will provide you with high quality service and information.
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. Gemological Institute of America...
Official web site of the Jewelers Vigilance Committee, formed in 1912 to provide education and self-regulation to the jewelry industry. Members operate under the highest standards of business practice after pledging to comply with all laws...
Jewelers of America (JA) is the national association for the retail jeweler. JA is both a center of knowledge for the jeweler and an advocate for professionalism and high social, ethical, and environmental standards in the jewelry trade. Th...
National Jeweler Network - NationalJewelerNetwork.com keeps industry professionals up-to-date on current affairs and trends affecting the jewelry trade.
Gemology World - the Canadian Institute of Gemmology (C.I.G.), Gemological Interactive Website. C.I.G. Course Catalogue. GemForum - The Information Exchange. GEMMOLOGY CANADA - The Gemmological Electronic Magazine. The Gem Connoisseur Club....