A colourless, flawless 101.73 carat diamond has been bought for $US26.7 million at an auction in Geneva.
After the sale, Christie's representative Raul Kadakia said Harry Winston was the buyer of the diamond on Wednesday evening. The seller was a diamond merchant.
Harry Winston, which was acquired earlier this year for $US1 billion by Swatch Group, is to name it "Harry Legacy".
Christie's said the diamond was 236 carats in the rough when extracted from the Jwaneng mine in Botswana.
