The value of a natural color diamond is determined by a number of factors, the most important being the face up appearance and rarity of the color. More
common colors such as gray, brown and yellow will generally have lower cost than rarer natural color diamonds. Colors that appear less frequently in nature
such as pink, blue, green, purple and orange are more valuable. The rarest known and most expensive color of all is red.
How to buy on a budget
Nowhere in gemology is beauty and value more in the eye of the beholder
than in that of natural color diamonds. Discover the secrets of finding a Natural
Color Diamond that is a perfect fit for your taste and budget...more 
Secondary color
While rarity of the color dictates the value of a Natural Color Diamond, the
intensity of the color as well as the presence of secondary colors can greatly
affect the market price as well. Here is a helpful chart...more
Color relationship
When buying Natural Color Diamonds, the amount of color choices
can be overwheming. Take a moment to explore a color relationship chart
(courtesy of aurora gems) to see how each color relates to another...more
