Fancy Color Diamonds
Even more rare than colorless diamonds (one out of 10,000), fancy color diamonds come in every color of the spectrum, yellow diamonds being the most common and red the rarest ones.
Color is the most important characteristic of all 4 Cs when fancy color diamonds are concerned. Color is followed by carat weight and cut, whereas clarity is not very important. Generally, the bigger the carat weight and the more intense the color, the rarer and more valuable a fancy color diamond will be. The cut is such to maximize the color, as it is the predominant feature.
Color of fancy color diamonds is not measured on a D-Z scale as with colorless diamonds, but rather in terms of hue, tone and saturation.
Hue refers to the primary and most dominant diamond color. GIA uses 27 different colors for fancy diamonds color grading. Apart from the main color, diamonds can have one or more secondary colors or modifiers. The main color is the last one mentioned in the grading report.
Tone determines how light or dark the color of a diamond is, whereas saturation refers to the strength and intensity of diamond color.
Fancy color diamonds are graded as follows:
Faint, Very Light, Light, Fancy Light, Fancy, Fancy Intense, Fancy Vivid, Fancy Dark, and Fancy Deep.
Besides yellow fancy color diamonds, there are also pink, green, blue, orange, black, gray, brown, white and red diamonds.