Tier 1

The Natural Diamond Council (NDC) inspires and informs consumers about the incredible world of natural diamonds through its Only Natural Diamonds platform. The platform is the authoritative publisher on all […]

Gemological Institute of America, the leader in gemological research, education and science-based gem identification and grading services.

Established in 1888, De Beers Group is the world’s leading diamond company with expertise in the exploration, mining, and marketing of diamonds. Together with its joint venture partners, De Beers