Natural fancy black diamonds are very rare and expensive, therefore most of the Black diamond are heated in Rough and that takes the price down dramatically.

Black diamond prices are usually cheaper than other colored diamonds such as yellow diamonds, pink diamonds, orange diamonds, blue diamonds

Black diamonds are called carbonados, the Portuguese word for “burned” or “carbonized.” These coal-looking diamonds are over 3 billion years old, but no one knows how they originated.

A paper published in December 2006 by researchers from Florida International University and Case Western Reserve University claimed black diamonds came from outer space. The researchers claimed that nitrogen and hydrogen present in black diamonds indicated they came from space, falling to the earth in the form of meteors.

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