Asscher-Cut Fancy Intense Yellow Diamond Ring, 8.17 Carats, in Platinum

The color grade of white diamonds is determined by absence of, or the amount of, yellow tint or other modifying colors. The highest grade white diamonds are crystal-clear, pure white stones. The color grade is measured on an alphabetical chart starting with "D" (colorless) and running through "Z" (light color). As the color grade moves down the alphabet, the amount of color in the diamond becomes more obvious and the value of the diamond decreases. However, once the color tint of a diamond reaches a certain level of saturation, the appearance begins to improve, becoming more attractive, and the value increases. For yellow diamonds, as the intensity of the color increases beyond the letter "Z", the grading system changes to (from lightest to strongest): Fancy Light, Fancy, Fancy Intense, Fancy Vivid.