World’s largest white diamond – ‘The Rock’, goes up for auction; see stunning images1/5 The largest white diamond ever auctioned will go under the hammer in Geneva next week. A 228.31 carat white diamond called ‘The Rock’ is the largest white diamond ever seen throughout auction market history. “The Rock”, a pear-shaped stone roughly the size of a golf ball, is expected to sell for up to $30 million. Take a look at some of the stunning images of this beautiful white diamond:2/5 The Rock is estimated between 19,000,000 – 30,000,000 CHF (Swiss Francs) will sold as highlight of the Geneva Magnificent Jewels auction on 11 May 2022. (AP Photo) The Rock, a 228.31 carat pear-shaped stone roughly the size of a golf ball, is expected to sell for up to $30 million. (Reuters Photo) Mined in South Africa, “The Rock” was worn by its former owner as a Cartier necklace. (Reuters Photo) Diamond prices have been buoyed by sanctions on major producer Russia as well as the return of VIP events as pandemic restrictions unwind. (Reuters Photo)