Out of this world: 555.55-carat black diamond lands in Dubai

[Still Waters]

Auction house Sotheby's Dubai has unveiled a diamond that's literally from out of this world.

Sotheby's calls the 555.55-carat black diamond—believed to have come from outer space—"The Engima." The rare gem was shown off on Monday to journalists as part of a tour in Dubai and Los Angeles before it is due to be auctioned off in February in London.

Sotheby's expects the diamond to be sold for at least 5 million British pounds ($6.8 million). The auction house plans to accept cryptocurrency as a possible payment as well.

Sophie Stevens, a jewelry specialist at Sotheby's Dubai, told The Associated Press that the number five bears an importance significance to the diamond, which has 55 facets as well.

https://phys.org/news/2022-01-world-carat-black-diamond-dubai.html

[Tom1200]

Isn't that just a lump of coal?  There's this much bigger one - 15 tons - at Bedwellty House in Wales:

 

which I estimate is worth about £750 billion, or three Apples.

[Still Waters]

Update:

Black diamond, largest ever cut, sells for $4.3 million

"The Enigma", the world's largest known cut diamond at 555 carats, went under the hammer in London on Wednesday for £3.16 million ($4.3 million, 3.8 million euros) having recently gone on display for the first time.

The rare black, or carbanado, diamond is believed to have been created when a meteorite or an asteroid hit Earth more than 2.6 billion years ago.

The 555.55 carat, 55-faced diamond reached £3.16 million, excluding the buyer's premium, at an online sale held by London's renowned Sotheby's auction house.

https://phys.org/news/2022-02-black-diamond-largest-million.html