Colorless diamonds are rare and expensive, but colored diamonds can be more rare and expensive, because colored diamonds are so uncommon and beautiful. They are so atypical that it is extremely hard to find two or more, same colored diamonds. So every colored diamond is unique. Colored diamonds can be found as pink diamonds, green diamonds, yellow diamonds and blue diamonds. Also colored diamonds can be found as a mix or combination of two or more colors.Opposite white diamonds, clarity is not so important so the rule 4C, which is important for the white (colorless) diamonds here is not so important. So for a colored diamonds the rule is more like 3C+C. Colored diamonds are graded by intensity of the color and the color itself. Also the carat weight is important and also the cut. The intensity of the color makes diamond more expensive. According to Gemological Institute of America (GIA) there are 9 (nine) different grades for the intensity of the colored diamonds.
Colored diamonds intensity grading
1.Faint
2.Very Light
3.Light
4.Fancy Light
5.Fancy
6.Fancy Dark
7.Fancy Intense
8.Fancy Deep
9.Fancy Vivid
For example, a Fancy Vivid Blue Diamond is more expensive than Fancy Intense Blue Diamond with a identical cut and carat weight.
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