The Gemological Institute of America recognizes 5 grades when determining and assigning a color grade to natural yellow diamonds. Color is graded for its “intensity” with some yellow diamonds having a very strong color while others are much lighter with just a yellow tint. Also taken into consideration are “tone” and color “saturation” of the diamond. For that purpose an intensity color scale was invented specifically for yellow diamonds with 5 grades as follows:
Fancy Light, Fancy, Fancy Deep, Fancy Intense and Fancy Vivid.
Diamonds On The Key offers a variety of these color grades in a wide array of cuts and carat weights.