When is a coloured diamond a fancy colour diamond?

When a diamond falls outside of GIA’s D-to-Z colour scale, it is considered a coloured diamond (sometimes called a fancy-colour diamond). This includes all colours other than colourless to light yellow or brown. On GIA Coloured Diamond Grading Reports, coloured diamonds are graded in order of increasing colour 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.