The diamond color evaluation of most gem-quality diamonds is based on the absence of color. Different colored diamonds other than the traditional white are available in yellow, brown, pink, and blue . Still, presence of yellow tints is undesirable in traditional white stones - less the body color, higher will be the true color reflection, enhancing its value.

Here below is the scale for color determination in diamond:

  • Colorless Diamonds: Grade – D,E and F

    While there are differences in color between D, E, and F diamonds, they can be detected only by a gemologist in side by side comparisons, and rarely by the untrained eye. D-F diamonds should only be set in white gold / platinum. Yellow gold reflects color, negating the diamond's colorless effect.

  • Near Colorless: Grades G - J

    Contain color traces, ideally set in platinum/white gold

  • Faint Color: Grades K-M

    Beginning with K diamonds, color (usually a yellow tint) is more easily detected by the naked eye.Set in yellow gold, these warm colored diamonds appeal to some, and are an exceptional value

  • Very Light: Grades N-R

    Easily detectable brown or yellow tint and are less expensive compare than higher grades

  • Light Color: Grades S-Z

    Color presence is too much for a white diamond

The Image below shows Diamond Color grades-

Color becomes much harder to detect once a stone is set in a ring and placed in an environment that contains color). For instance, an H color diamond may look as colorless as a D when set in a ring. Another factor that affects a diamonds's apparent color is the color of the mounting itself. Yellow gold makes slight amounts of yellow in a diamond less obvious, while white metal mountings make the color in yellow diamonds more apparent.

Color becomes more important as carat weight increases, because color is easier to perceive in a larger diamond.