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There are various types of diamond certificates. The following are the most respected institutes. Click on each of the links under the description so that you can verify that your diamond certificate is real.

GIA

The Gemological Institute of America was actually the first group to develop an internationally accepted grading system. You know the 4 C’s?

Even prior to the EGL, GIA was the first to introduce a diamond grading report and set the standards for diamond grading worldwide. The company compiles reports on diamonds over 1 carat in size. What’s more, they are the group responsible for examining some of the world’s most famous gems. Each diamond screened with GIA comes with a complete report detailing the weight, cut, proportions, color grade and clarity.

GIA (Gemological Institute of America) -- Sample Cert

GIA (Gemological Institute of America) -- Mini Sample Cert

EGL

The EGL (European Gemological Society) has really been the defining group in setting the standards and criteria for diamond grading. Their Diamond Certificate and Diamond Consultation offers diamond buyers a detailed report on the various aspects of the grading process. Their certificates are recognized worldwide and their client base includes craftsmen, wholesalers, dealers and manufacturers. However, the EGL does not sell diamonds and works independently from any diamond sales groups.

EGL (European Gemological Laboratories) -- Sample Cert

AGS

The American Gemological Society (also referred to as AGS laboratories) serves a wide variety of clients including jewelry wholesalers, diamond cutters, jewelers, and various manufacturers. Their grading report, referred to as the AGS Diamond Quality Document (DQD) offers a comprehensive report on the cut grade of round, brilliant cut diamonds. In addition their report covers all four aspects of the grading process including cut, clarity, color and carat weight. Their ratings are given on a scale from 1 to 10.

AGS (American Gemological Society) -- Sample Cert

IGI

The International Gemological Institute issues over 400,000 grading reports each year and their reports encompass three distinct areas including the Diamond Report, Identification Report, and the Information Appraisal Report. The diamond report helps ensure the diamond’s authenticity by providing information about weight, measurements, shape and cut, clarity, color and several other aspects of the gemstone. The identification report provides an enlarged photograph of the diamond to substantiate the information about proportions, measurements and the 4 C’s. Finally, the Appraisal report gives an estimate about the diamond’s replacement value expressly for insurance purposes.

IGI (International Gemological Institute) -- Sample Cert