1. Pink Star Diamond – $71.2 million
Yes, the Pink Star Diamond was sold at auction in 2017 for $71.2 million, setting a world record for the highest price ever paid for a diamond at auction.
2. The Graff Pink – $46 million
The Graff Pink is a 24.78-carat diamond that was sold at a Sotheby’s auction in 2010 for a record-breaking $46 million.
3. Wittelsbach-Graff Diamond – $23.4 million
Yes, the Wittelsbach-Graff Diamond sold for $23.4 million at an auction in 2008.
The diamond is a rare blue diamond that was discovered in India in the 17th century and has been passed down through the royal families of Austria and Bavaria.
4. The Oppenheimer Blue – $57.5 million
The Oppenheimer Blue is a fancy vivid blue diamond, weighing in at 14.62 carats, that was sold for a record-breaking $57.5 million at Christie’s in Geneva in May 2016. It is the most expensive diamond ever sold at auction.
5. The Constellation – $26.6 million
The Constellation diamond is a 101.73-carat, D-color, an internally flawless diamond that was sold for $26.6 million at a Christie’s auction in Geneva, Switzerland in November of 2016. The diamond is a cushion cut and is said to be one of the finest ever offered at a public auction.
It was originally found in the form of a rough diamond in the Premier Mine in South Africa in 2009. The stone was then cut and polished over the course of three years and was given its name in reference to the stars of the constellation Ursa Major, which it is said to resemble.
6. The Blue Moon of Josephine – $48.4 million
The Blue Moon of Josephine is a 12.03-carat blue diamond that was sold at a Christie’s auction in Geneva, Switzerland in November 2015 for $48.4 million. The diamond is an internally flawless fancy vivid blue diamond, which is the highest possible grade for a blue diamond.
It is cut into a modified rectangular emerald cut and has a very unique blue color. It is thought to have originated from the Cullinan Mine in South Africa.
7. The Pink Legacy – $44 million
The Pink Legacy diamond is an 18.96-carat fancy vivid pink diamond, and the last time it was auctioned at Christie’s in Geneva, it sold for a record-breaking $44 million.
8. The Allnatt Diamond – $3 million
The Allnatt Diamond is a 101.29-carat cushion-cut diamond with a yellowish-green color. It was discovered in South Africa in the late 19th century and was named after its original owner, Alfred Allnatt.
The Allnatt Diamond is currently owned by the Diamond Corporation of South Africa and has been estimated to be worth around $3 million.
9. Lesotho Promise – $12.4 million
The Lesotho Promise is a 54.6-carat diamond that was discovered in the Letseng Diamond Mine in Lesotho. It was sold in 2006 for a reported US$12.4 million, setting a record price of US$226,000 per carat.
The diamond is described as a type IIa, D color, flawless gem. It was cut and polished into a pear shape and is considered the largest high-quality diamond to be discovered in the past century.
10. The Moussaieff Red Diamond – $7.2 million
The Moussaieff Red Diamond is one of the world’s most expensive and renowned diamonds. It is a 5.11-carat fancy red diamond and is considered to be the largest red diamond ever discovered.
It was discovered in Brazil in 1990 and sold to Moussaieff Jewellers in 2001 for $7.2 million. The diamond is cut into a rectangular shape and set in a platinum and gold ring. Its clarity is VS2 and its color grade is Fancy Red.