Are Colored Diamonds Natural?

Just like colorless diamonds, colored diamonds are formed naturally out of carbon deep below the surface of the Earth at temperatures greater than 1000 degrees Celsius over the course of millions of years.  What gives colored diamonds their beautiful, unique colors, though, are changes made to their chemical structure as they form, which alter the way they reflect light and the color our eyes perceive. These small changes are very rare – happening in only 0.1% of all diamonds – but can create spectacular colors spanning the entire color wheel, including pink, purple, red, blue, yellow, brown, and every color in between, all made naturally.

0.36 carat Heart shaped Pave engagement ring IN 18K White Gold James Allen
Find this ring at James AllenThe natural pink diamond in this ring was formed in the earth millions of years ago. © James Allen

How are Colored Diamonds Priced?

Colored diamonds are graded and priced using the 4Cs: cut, clarity, carat, and color. Cut, clarity, and carat all follow the pricing rules of colorless diamonds, but the color grading is much different. There are nearly 30 base colors, which can be combined to create over 200 unique color combinations. The specific name of the color is determined by a laboratory grader, who examines the base color