Color

Color in a diamond signifies the blandness degree. Most of these gemstones are white with some showing tinted yellows, grays, silvers, and browns. Presence of tint in a white diamond is an undesirable trait. Color impurity generally occurs due to the presence of hydrogen, nitrogen, boron, and other elements. Nitrogen traces leads to pale brownish yellowish tints. So, is there something called a colorless diamond?

Only those varieties made from pure 100% carbon, minus any impurities are colorless. Grading of diamonds occur on Color Scale absence or Whiteness Scale. Clearer or whiter the color, greater is the diamond value.

GIA Grading Based on Color

Comparison of graded diamonds is done against control stones, which are of specific color and preselected. Only grading of loose stones is done via this method, because metal setting affects the color.

Here are different grades of diamond based on its color according to the Gemological Institute of America (GIA) grading system.

  • Grade D Highest grade, extremely rare, completely colorless
  • Grade E Negligible color traces, only seen through expert eyes, rare gemstone
  • Grade F Colorless grade, high quality
  • Grade G - H Excellent value, near colorless, color noticeable upon comparison
  • Grade I - J & K Slightly detectable color, excellent value
  • Grade L – M & N - Z Noticeable color

A Grading System Beginning with ‘D’

Comparison of graded diamonds is done against control stones, which are of specific color and preselected. Only grading of loose stones is done via this method, because metal setting affects the color.

When GIA introduced its own grading system, they naturally wanted to begin a fresh with a clean slate. So they decided to begin with the English alphabet D, to do away with confusions of any kind at the outset. Color distinctions related to diamond are quite subtle and only a trained eye can discern the difference. However, even these slight variations prove to be crucial when it comes to Price and Quality of the stone.