| Truly colorless stones, graded D, are extremely rare and very valuable. Diamond color grades start at D and continue through the alphabet, gradually gaining more color the farther they go. The closer a diamond is to being colorless, the rarer and more valuable it is. Diamonds are formed under intense heat and pressure, and traces of other elements incorporated into their atomic structure account for the variances in color. A single change in color grade can significantly affect a diamond's value. It is the lack of color, or whiteness in a diamond that allows the light to pass effortlessly through the stone and disperse that beauty back to the observer. |
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