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What is a Diamond Certificate?

A diamond certificate verifies each diamond’s specifications, including its color grade, carat weight, clarity grade, and cut grade, and you should never buy a diamond without one; the most well-known grading laboratories are the Gemological Institute of America (GIA), the American Gem Society (AGS), and the International Gemological Institute (IGI).

A diamond’s cost depends upon objective characteristics popularly known as the 4C’s: Color, Clarity, Cut, and Carat, with the relationship between these four characteristics determining the value of a diamond. Although it is commonly assumed that carat is the most important member of the 4C’s, color, cut, and clarity have a much greater impact on the appearance of a diamond.