The arrows will bring you back up to this list. The difference between one grade and its neighbor is very subtle.
Most Diamonds have a trace of yellow or brown body color.
Therefore, with the exception of some pleasing fancy colors such as pink, blue, violet or intense fancy yellow, the colorless grade is the most valuable. The relative size, nature, location and number of inclusions determines a Diamond's clarity grade and hence its value. To determine a Diamond's clarity grading, it must be examined under a 10x magnification by a trained, skilled eye. Minute inclusions make every Diamond unique. These are, in fact, nature's fingerprints and do not mar the Diamond's beauty.