Diamonds come in almost every color of the rainbow; however, most people prefer those in the white (or colorless) range. Along with cut, color is also very important in determining the overall beauty and brilliance of the diamond. The color grading scale begins with the letter D (being the whitest) and ends with the letter Z (being most yellow). The less color in a diamond, the better is the color grade and the sparkle. A white diamond will look very clean, crisp, and brilliant, and it will have a lot of fire. A low-color diamond will look darker and lacks such brilliance.