One of the most remarkable things about diamonds is that they exist in nearly every shade of the rainbow. While colored diamonds are an unusual natural occurrence as a whole, the rarest of them all are red. In fact, only roughly 20 to 30 true red diamonds have been discovered, and the majority of them are less than 1/2 carat in weight. RockFinders has two very important Red Diamonds in our Vault section.
Nitrogen or boron is responsible for other diamond colors, red diamonds are rather different. Like colorless stones, they are made of pure carbon. So instead of the presence of impurities, it’s a deformation in the atomic makeup of the stone that produces the red color. This structural flaw is called plastic deformation, and it causes light to pass through the lattice and bend in such a way that it reflects the gorgeous ruby-like hue. As with any other colored stone, the more intense the hue, the more rare and valuable it is. The intensity can range from a dark pink diamond to a purplish red one.
Red diamonds are expected to become even more difficult to come by in the future. As a result, experts predict they will cost double what they do now within just a few years.