When is a colored diamond a fancy color diamond?

When a diamond falls outside of IGL’s D-to-Z color scale, it is considered a colored diamond (sometimes called a fancy-color diamond). This includes all colors other than colorless to light yellow or brown. On IGL Colored Diamond Grading Reports, colored diamonds are graded in order of increasing color strength, from Faint, Very Light, Light, Fancy Light and Fancy to Fancy Intense, Fancy Vivid, Fancy Dark and Fancy Deep. Fancy Intense and Fancy Vivid generally command higher prices.