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Color grading of diamonds was performed as a step of sorting rough diamonds for sale by the London Diamond Syndicate. As the diamond trade developed, early diamond grades were introduced. Without any co-operative development, these early grading systems lacked standard nomenclature and consistency. Some early grading scales were; I, II, III; A, AA, AAA; A, B, C. Numerous terms
This is especially important when considering fancy colored diamonds, where the slightest shift in color could vastly affect the price of the diamond. Most fancy colored diamonds are not cut in to round brilliants, because whereas the round brilliant is prized for its ability to reflect white light, the most important characteristic in a fancy ...
The Fancy Color Research Foundation was founded in 2005 when the organization began to collect data for fancy color diamond wholesale market prices. Data was collected for nearly ten years before the first quarterly update of the Fancy Color Diamond Index (FCDI) in January 2015. [3]
As with the color in all fancy color diamonds, the color in pink diamonds is assessed according to its hue, saturation, and tone. [10] The hue refers to the primary and secondary colors, the saturation refers to the intensity of color, and the tone refers to the darkness of the color. Pink diamonds can occur in hues ranging from brown-pink to ...
The next grade has a very slight trace of color, which can be observed by any expert diamond valuer/grading laboratory. However, when studded in jewellery these very light colored diamonds do not show any color or it is not possible to make out color shades. These are graded as E color or F color diamonds. Diamonds which show very little traces ...
Diamond certified FL (flawless) by the GIA Two diamonds of grade VS 1 and SI 2 respectively. The GIA diamond grading scale is divided into six categories and eleven grades. [2] The clarity categories and grades are: [3] Flawless category (FL) diamonds have no inclusions or blemishes visible under 10× magnification. [3]