D through f are the most valuable ratings but i which is in the near colorless range is still considered a good color rating.
Best color diamond rating.
This short video explains the gia color scale and how gia classifies a diamond with a letter grade from d to z by comparing it to masterstones representing the color grades on the gia scale.
But these ratings are determined by expert gemologists comparing against a set of master stones.
For the best value in what would appear to the naked eye as a colorless diamond look for g j diamonds.
The highest grade for diamond color is d or completely colorless.
However it s a little more complicated than that.
For example if you are buying a yellow gold setting or looking to get a vintage design diamond ring i would recommend getting lower color diamonds in the i j and k range to complement the setting.
Best can be very subjective especially when it comes to diamonds.
The d color grade is the highest quality color grade a diamond can receive and can reasonably be called the best color for a diamond.
Colorless diamonds allow more light and so show more sparkle and fire than other diamonds.
Hence it is important to get a gia expert s opinion in evaluating the best color for your diamond.
However there are times when the best color grade to buy is actually one with a yellowish tint.