As we all say, “Diamonds are Forever”. More than that they are rare and unique, Natural Fancy Colored Diamonds are even rarer. For every 10,000 White Diamonds you have only 1 Natural Fancy Colored Diamond.
Yellow, Pink, Blue, Green and Red Diamonds are the rarest and most valuable. Orange, Brown and Black are also popular but not as rare.
The Intensity of the color is the main factor that would determine the value of the Fancy Colored Diamond.