Auction house Sotheby’s unveiled The Enigma, a 555.55 Carat Fancy Black Diamond. This extremely rare black precious stone is also the largest Fancy Black Natural Colour diamond in the world and was listed as the largest cut diamond in the world in the 2006 Guinness Book of World Records.
To have a natural faceted black diamond of this size is very rare happening and its origins are surrounded by mystery. It is thought to have been created either from a meteoric impact or having actually emerged from a diamond-bearing asteroid that collided with Earth.

Sotheby’s will be accepting bitcoin (BTC), ethereum (ETH), and the stablecoin USDC for the sale of The Enigma. Last year, the British auction house has auctioned off another rare treasure. The Key 10138 diamond was acquired for $12.3 million in cryptocurrency. If the black diamond is purchased with crypto, the transaction will be processed by Coinbase Commerce, Sotheby’s informed.
Currently, the Pink Star is the most expensive diamond ever sold, fetching $71 million at a Sotheby’s auction in April 2017. Other notable sales include the 14.62-carat Oppenheimer Blue sold for $50.6 million in a Christie’s auction in May 2016. In 2020, a 14.83-carat diamond was sold by Sotheby’s for $26.6 million.
The Enigma, which is on tour now and being displayed in Dubai, Los Angeles, and London, will be auctioned in a single-lot online sale from February 3 – 9.
Exhibitions
Dubai 17 – 20 January
Los Angeles 24 – 26 January
London 2 – 9 February
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