The diamond "surpasses the weight of both the Great Star of Africa, 530.2 carats, and the Golden Jubilee, 545.67 carats, making it not only one of the largest fancy black natural-color diamonds in the world, but also the largest faceted diamond to ever appear on the auction market."
Black diamonds are thought to have been formed from a meteoric impact or diamond-bearing asteroid that collided with Earth approximately 3.8 billion years ago, and believed to be a rare natural occurrence only found in Brazil and the Central Republic of Africa.
The diamond will receive online bids between Feb. 3 and 9.
