A truly colorless diamond is extremely rare. Most diamonds possess varying degrees of yellow or brown, and small, subtle differences in color can make a substantial difference in value. If a diamond is well cut, the diamond’s refraction and dispersion often will disguise certain degrees of coloration. Unless a diamond is a fancy color (or any color other than colorless to light yellow or brown), the American Gem Society Color Grading System places it on a 0 to 10 scale, 0 being colorless. To accurately and consistently grade color, an American Gem Society experienced grader will utilize special lighting to compare the diamond being graded to a set of American Gem Society Master Color Comparison Diamonds. These diamonds have met exacting standards of cut, color, clarity, and carat weight.
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