Gemological Institute of America (GIA) Diamond Certification
Internationally, the Institute has distinguished itself as the preeminent source of gemological knowledge and professionalism. By extension, the GIA Diamond Grading Report and the GIA Diamond Dossier are considered the world's premier gemological credentials. Diamonds of all shapes and sizes are sent to the Institute from every corner of the globe for analysis and grading.
European Gemological Laboratory (EGL) Diamond Certification
E.G.L. has more than 20 years experience in grading diamonds and places an exceptionally high premium on judgment, competence and experience. E.G.L.'s global reputation and acceptance of its certificates means you can buy diamonds with greater confidence. E.G.L. has always been in the forefront of innovation particularly when it comes to its certificates. The diamond certificate records all the relevant information pertaining to the diamond, including carat weight, color grade, clarity grade, measurements and physical properties as well as plotting diagrams.
American Gemological Society (AGS) Diamond Certificate
Since 1996, the AGS Laboratories has provided modern diamond grading services to the Jewelry Industry. Today, AGS continues to provide diamond grading and consistently adheres to the AGS consumer protection ethics and standards. Consumers benefit from AGSL documents because they are empowered with detailed information about their diamond, and can rest assured that the report is the industry's most thorough and consistent.
GemEx is the global leader in diamond brilliance, fire and sparkle certification. By using GemEx when buying a custom designed diamond, you can select a diamond with superior brilliance, fire and sparkle. The bar graphs on each GemEx certificate show the diamond’s rating compared to all other diamonds of the same shape. GemEx set the scales for each diamond shape by measuring tens of thousands of diamonds to determine the range of brilliance, fire and sparkle possible. These measurements show how the diamond will look when it is worn. What makes a diamond show its brilliance, fire and sparkle is the way the diamond plays with light. This is measured by moving the diamond or the light. The higher the GemEx ratings, the more brilliance, fire and sparkle for that diamond. GemEx ensures accurate brilliance, fire and sparkle measurement by measuring the diamond at multiple light positions.