‘Flawless’ and ‘vivid purplish pink’ diamond expected to fetch more than $35 million at auction

An impeccable diamond coming up for auction takes pretty in pink to an entirely new level.

The Eternal Pink Diamond, a 10.57-carat jewel, was fashioned from a 23.78-carat rough stone discovered in 2019 at the Damtshaa Diamond Mine in Botswana. “This diamond is internally flawless,” as graded by the Gemological Institute of America, said Alexander Eblen, a senior specialist in gems and jewelry at Sotheby’s in New York, where the diamond will be auctioned June 8.

Sotheby’s and experts think there is a chance bidding for the diamond, which is expected to surpass $35 million, could challenge the record of $57.7 million fetched by the Williamson Pink Star diamond, which was sold at an October 2022 Sotheby’s auction in Hong Kong.

That 11.15-carat diamond holds the title for the most expensive diamond per carat ever sold – $5.2 million per carat. However, its presale estimate was $1.9 million per carat, Barron’s reported.

The Eternal Pink diamond’s estimated price per carat is $3.3 million, the highest price per carat of any diamond or gem prior to its sale, according to Sotheby’s. That gives the diamond a chance to challenge the current price-per-carat record, Bloomberg reported. 

The current record for the most expensive diamond or any gemstone sold at auction is held by the CTF Pink Star, a 59.60-carat oval mixed-cut diamond auctioned at Sotheby’s Hong Kong in April 2017 for $71.2 million.