About Colorless
Other than size, the rarity of a diamond is mostly dependent on it’s color. Though most people would not be able to detect the difference between a nearcolorless diamond and a colorless diamond of say a half carat or under in most lighting conditions the difference can be dramatic in rarity and therefore cost. When people are balancing Cut (beauty), Color (rarity) and Clarity (which supports both beauty and rarity) to get the most diamond for their money they typically choose beauty first. Since the differences in color are so subtle in the higher ranges (D to G) it seems like an easy and satisfying call to choose the best cut stone over the rarest color.
