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 Rarest diamonds sold infographic
Graphic shows rarest diamonds sold at auction.


Rarest diamonds sold at auction

By Duncan Mil

March 30, 2023 - June 8, 2023 - The Eternal Pink Diamond, a flawless 10.57-carat jewel, is expected to fetch more than $35 million at Sotheby’s, potentially setting a record for the highest price per carat.

Sotheby’s will feature the stone in its magnificent jewels auction on June 8 in New York. Mined by De Beers at the Damtshaa mine in Botswana in 2019, the raw 23.78-carat diamond was cut and polished by diamond company Diacore’s team in New York over six months.

The Williamson Pink Star set the record price per carat. This 11.15-carat fancy vivid pink diamond was sold in October 2022 at Sotheby’s in Hong Kong for US$5.2 million per carat, or for a total of $57.73 million (HK$453.2 million). But it had a presale estimate of $1.9 million per carat, according to Barron’s Daily.

Pink diamonds are one of the rarest coloured diamonds on earth. Of all the diamonds submitted to the Gemological Institute of America for grading, less than 3% are classified as coloured diamonds. Within these coloured diamonds, less than 5% are considered predominantly pink.

Pink diamonds have also become some of the most valuable jewels sold at auction, with three pink diamonds -- CTF Pink Star ($71.2 million), the Williamson Pink Star ($57.7 million) and Graff Vivid Pink ($46.0 million) -- taking up the top five highest-priced diamonds ever sold at auction, according to Sotheby’s.

PUBLISHED: 30/03/2023; STORY: Graphic News; PICTURES: Sotherby’s