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By creating the 4Cs of Diamond Quality and the International Diamond Grading System™, GIA set the standard for describing and evaluating diamond quality anywhere in the world. Watch this video to learn the history of the 4Cs. | GIA Education
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Did you know: GIA created the 4Cs of diamond quality, the universal standard for assessing diamond value. Diamond color grading of most gem-quality colorless diamonds is based on the absence of color. A truly colorless diamond has no hue, and therefore a higher value. The scale begins with the letter D, representing colorless, and continues, with increasing presence of color, to the letter Z. Let GIA help guide you through the D-to-Z diamond color-grading scale with this quick video! | 4Cs of Di
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DIAMOND GRADING REPORT - WGI CERTIFICATION www.wgi-global.com Our diamond reports cover the four C’s which are cut, colour, clarity and carat weight as well as an In-depth diagram which will give you a clear measurement and understanding of the diamond’s proportions | World Gemological Institute
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