Before the GIA D-to-Z Color Scale, the language surrounding diamond color and the methods of evaluation were chaotic at best. Establishing a scale for color grading is only as effective as the standardization of the evaluations themselves. In 1953, GIA introduced the GIA D-to-Z Color Scale, providing the industry with a much-needed system of absolutes, ensuring precise, accurate, objective color-grading could take place. The GIA D-to-Z Color Scale is used to evaluate the depth of a diamond’s color. The normal color range goes from D for colorless to Z for light yellow, light brown, or light gray, with variations between receiving a color grade. Today, the GIA D-to-Z Color Scale provides an internationally recognized scale for grading color depth which not only accounts for the colors we can see, but the subtle differences in each hue that define the quality of a diamond.
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Fancy Colored DiamondsFancy color refers to any diamond with a color outside of the normal color range. Unfortunately, there are no universal guidelines on the use of the term Fancy when describing color, but there is a general agreement within the gem and jewelry industry that it refers to yellow or brown diamonds that have more color than a Z master stone or they exhibit a color other than yellow, gray or brown.
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