A Certificate or Diamond Grading Report certifies a diamond as genuine.

Today, most fine diamonds are carefully evaluated prior to being set, by a respected laboratory such as the Gemological Institute of America (GIA) and European Gemological Laboratory (EGL). The diamond grading report, or “certificate” certifies the diamond as genuine and describes it in detail, providing important information such as color grade, clarity grade, carat weight, measurements, cutting, proportions, symmetry, and polish. Most loose diamonds sold by IDC have been analyzed and graded by either the Gemological Institute of America (GIA) or the European Gemological Laboratory (EGL).

IDC works with these independent laboratories, as they are some of the most respected laboratories in the diamond industry. These two laboratories are known for having the strictest, consistent, and unbiased systems for grading diamonds. Diamonds that are accompanied by these grading reports are the most highly valued in the industry due to the laboratories superior reputations.

Grading Report GIA set the standard for diamond grading and gemological identification, and their grading system serves as the international gem and jewelry industry’s benchmark credentials. This report describes the following: Shape and Cutting Style – The diamond shape and cutting style Measurement – The diamond dimensions in millimeters Weight – Weight of diamond listed to the nearest hundredth of a carat Depth – Depth in millimeters divided by width in millimeters. Table – The measurement of the table facet divided by the diameter in millimeters. Girdle – Range of girdle thickness Culet – Appearance of culet facet Finish – Grades of polish and symmetry Clarity – Clarity grade determined under 10x magnification Clarity Plot – A map of the approximate size, type, and position of inclusions as viewed under a microscope Color – Grade of color