Diamonds FAQ

• Tell me more about coloured diamonds
• Are laboratory-created diamonds real diamonds?
• What are gemmological characteristics of diamonds?
• What gemmological laboratories appraise diamonds?

What gemmological laboratories appraise diamonds?

Diamond certificates are issued by independent gemmological laboratories. There are several grading laboratories, the most prominent being: the International Gemological Institute (IGI); the Gemological Institute of America (GIA); the American Gem Society (AGS); the European Gemological Laboratories (EGL), Birmingham Assay Office's AnchorCert, HRD Laboratory (Hoge Raad voor Diamant) , GemEx Systems and a number of others.