Most carbonated diamonds are between 2.6 and 3.2 billion years old. Geologist Aaron Celestian (Los Angeles Museum of Natural History) believes that they may have formed “deep in the Earth’s interior,” “at impact sites where a large asteroid hit the Earth,” or even developed “in space and then fell to the Earth’s surface.”
“The Enigma” was not revealed to the public prior to the auction, and should sell for between €3.5 and €6.2 million, with the auctioneer also accepting payment by cryptocurrency. The diamond’s current owner has had it in his possession for about two decades, and not much is known about its history before that.
“The Enigma” diamond has already been on display in Dubai in January, and will now be auctioned by Sotheby’s in London.