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Color & Qualities Not Seen On Certificate

The Gemological Institute of America (GIA) color scale ranges from grades D to Z. As with other diamond grading scales, diamond value goes up exponentially with each increase in grade. Conversely, value goes down exponentially as the color grade decreases.

The GIA D-Z scale is divided into five categories. Diamonds within the same category usually looks similar in color to the untrained eyes.

  • Colorless — D, E, F.
  • Near Colorless — G, H, I, J.
  • Faint Yellow — K, L, M.
  • Very Light Yellow — N, O, P, Q, R.
  • Light Yellow— S, T, U, V, W, X, Y, Z

WHITE DIAMONDS:  The most valuable diamond color is D. A diamond of this grade commands a premium simply because of its complete colorlessness. You are probably familiar with the idea of diamonds being white. However, 98% of gem-quality diamonds actually contain some amount of yellow due to nitrogen impurities within the diamond.

DIAMOND COLOR GRADES AND PRICE JUMPS:  You’ll find an enormous price difference between a D and an E color diamond. The next biggest price difference lies between an F and a G color diamond. This is understandable, as G falls into the “near colorless” rather than “colorless” category.

G and H stones make great value choices. Although they’re not much darker than F, they’re much more affordable. Stones with I, J, and K color are commercial quality and are considered the "affordable range" in the Philippine market.

BROWNISH, GREENISH AND HAZY DIAMONDS: Most people think that there are only two (2) diamond colours: white and yellow. However, this is not the case. There are diamonds which are brownish or greenish which are not easily recognised by the untrained eyes. There are diamonds which are clear indoors but turn hazy or oily when exposed to sunlight or UV light. 

These qualities are not seen on GIA certificate. Although these diamonds may sell at 30-40% lower than the standard quality, it is best to avoid diamonds with brown, green, or haziness as it has a huge negative impact on the overall look of a diamond.

EFFECT OF GOLD COLORS ON THE DIAMOND COLOR:  Stones below J color start to look faintly yellow or brown, especially in larger carat sizes. Jewellers can disguise these colors, however, by setting the gem in yellow or rose gold because these can make lower grade stones look whiter.

Interestingly enough, yellow or rose gold settings do the opposite for stones of higher color grades. For stones G and above, the reflections of yellow or rose gold colors make the diamonds look warmer in tone. Therefore, a high-color grade diamond, if set in yellow or rose gold, is wasted. This will make the diamond appear to have the same tone as a stone with a lower color grade. 


  • Never get a diamond that is already set on a ring, you'll never be able to check correctly for color
  • Although diamonds with green, brown and haziness are 30 to 40% cheaper than the standard, these qualities have huge negative impact on the overall look of a diamond and should be avoided.
  • For a white gold setting, purchase a higher color grade stone.
  • For a yellow or rose gold setting, purchase a lower color grade stone.

We guarantee that our diamonds are within the standard of GIA color scale. We only offer diamonds which are non-brownish, non-greenish and will never turn hazy/oily when exposed to sunlight/UV light.