A “perfect” 100-carat diamond originally mined in South Africa has sold for $US22.1 million ($A29 million) in New York in just three minutes of bidding.
Sotheby’s had valued the jewel, which weighs 100.20 carats, at $US19 to $US25 million, calling it “the largest perfect diamond with a classic emerald cut ever to be offered at auction”.
Discovered in the De Beers mines of South Africa then cut, polished and perfected for more than a year, it was the highlight in 370 lots at a Sotheby’s jewellery auction.
The winning bidder took part by telephone but wanted to remain anonymous, Sotheby’s said.
The auction house had showcased the jewel twice in the Middle East – in Doha and Dubai – as well as Los Angeles, Hong Kong, London and New York to attract interest ahead of the sale.
Sotheby’s says only five comparable quality diamonds weighing more than 100 carats have been sold at auction, the most expensive of which fetched $US30.6 million at Sotheby’s in Hong Kong in 2013.
Gary Schuler, head of Sotheby’s jewellery department in New York, called the stone “the definition of perfection”.
‘The colour is whiter than white, it is free of any internal imperfections, and so transparent that I can only compare it to a pool of icy water,” he said before the sale.