Carbonado, commonly known as the “Black Diamond”, is the toughest form of natural diamond. It is an impure form of polycrystalline diamond consisting of diamond, graphite, and amorphous carbon.
Most black diamonds have been treated for improved durability. Irradiated or heat treated black diamonds will cost substantially less than untreated or colorless diamonds.
Cause of Color: Natural black diamonds are essentially colored by dark inclusions or impurities, which are great in number and evenly distributed throughout the stones. Many black diamonds in the marketplace are treated for even coloration and durability.
The Spirit of de Grisogono
The Spirit of de Grisogono is a spectactular 312.24 carat mogul-cut black diamond. It was patiently coaxed out of a 587 carat rough over the course of more than a year and is believed to be the largest natural black diamond in the world. It is currently set in a white-gold ring with over 700 white diamonds (36 carat total weight). It’s really a spec- tacular piece of jewelry in every respect!. The Spirit of de Grisogono was last sold to a private client of Grisogono Jewelers.