What is the rarest diamond color?

THE ANSWER

Red. Red diamonds are the rarest natural diamonds on earth. Fewer than thirty true red diamonds are known to exist. They form when extreme pressure distorts the crystal lattice in a very specific way. After red, blue diamonds are the next rarest. Then pink. Green diamonds are rare too. These fancy colour diamonds command enormous prices at auction. A single carat of natural red diamond can sell for over a million dollars. For most engagement ring buyers, the rarest colour that matters is D grade. That is perfectly colourless. Even D grade is uncommon. Most diamonds sold sit in the G to J range, which still look white to the eye.

NEXT STEP

Read the side-by-side stone comparison to understand the key differences, or browse lab-grown engagement rings if you are ready to start looking at real options.