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The prospect of purchasing a diamond may seem daunting, but through GIA, an unbiased authority on diamonds, you have several handy resources to help you select the highest quality diamond. First up, an overview of the 4Cs: Color, Clarity, Cut, and Carat Weight.
Find an AGS Jeweler to get your diamond looked at by a certified jeweler or take a closer look into the history of diamonds. This diamond rating chart can help you choose the right gem. Learn the color and clarity criteria by which diamonds are graded for valuation purposes.
GIA diamond grading reports list a diamond’s clarity grade and also provide a clarity chart – known as the official GIA Diamond Clarity Scale – depicting the eleven clarity grades for natural diamond within the diamond clarity scale.
The GIA Diamond Grading Report. This report uses the universally accepted GIA standards to determine a natural diamond’s shape, color, clarity, cut and carat weight – as well as proportions, finish and treatments. It also includes a plotted diagram which maps your diamond, identifying its unique characteristics. The GIA Diamond Origin Report.
Natural Colored Diamonds. Assessment of color origin and quality based on GIA’s color grading system for diamonds outside the D-to-Z range. Learn More
This chart shows you what your chances are of finding an eye-clean diamond in a particular grade. Those percentages are based on your typical one carat diamonds. So you are best off looking for a diamond in the VS2 – SI2 range when purchasing a one carat diamond.
After carefully assessing and analyzing a diamond, the grading lab issues a detailed report or grading certificate that includes ratings and scores for each of the fundamental characteristics of a diamond — that is, the 4Cs: cut, color, clarity and carat weight.
Estimating a Cut Grade Using the GIA Diamond Cut Grading System Explains the system, gives definitions, and displays the proportions listed on a GIA Diamond Grading report.
Learn what diamond clarity is and how it affects a diamond's quality and price. View charts, scales, and FAQs to evaluate which clarity grade is best for you.
GIA Diamond Color Chart. To provide shoppers with an understanding of each diamond’s color level, grading entities like the Gemological Institute Of America (GIA) use a diamond color chart to judge diamonds based on their appearance and give each stone a color grade within a given scale.