Natural fancy colored diamonds are very rare and expensive. Pink is one of the rarest and most desirable color. The Darya-i-Nur diamond is the largest pink diamond in the world at about 185 carats.

Natural pink diamonds are so rare that most jewelers have never seen one and will never own one. Any deeply colored pink diamond would be extremely rare and valuable. Most pink diamonds are only faintly pink. If they are very small, the pink coloration may be so light as to be almost unnoticeable. With larger stones it is easier to see the color, but the larger the stone, the rarer and more expensive. Even so the coloration of most pink diamonds remains subtle rather than distinct.