The world's largest known cut diamond, a rare 555-carat black diamond, went on display for the first time on Monday in Dubai ahead of its sale that predicted to reach $5 million
The Enigma diamond is believed to have been created when a meteorite or an asteroid hit the Earth 2.6 to 3.8 billion years ago.
It contains traces of nitrogen and hydrogen abundant in space, as well as osbornite, a mineral uniquely present in meteors...
Katia Nounou Boueiz, Head of Sotheby's UAE, in a released statement: 'We are honored that Dubai has been chosen as the first stop for this exceptional rarity and are thrilled to play a part in its journey, which began so many millions of years ago.'
Black diamonds, or carbonado, are composed of microcrystalline diamonds in random crystallographic orientations.
https://newsblok.net/black-diamond-that ... uction-wh/
They [black diamonds] were first recognized as a type of diamond in 1841 by Portuguese prospectors in Brazil, who called them ‘carbonados’ because they looked like small pieces of charcoal.
The diamond was acquired as a rough stone in the 1990s by its current owner, who cut it into its current shape inspired by the hamsa, the palm-sized symbol of the Middle East of strength and protection.
Here is a pic sculpture of the Hamsa symbol I was looking for today lol
https://files.catbox.moe/pxmamd.jpg 
After the show in Dubai, Enigma will travel to Los Angeles, California and London before the seven-day online auction begins on February 3.
