Auction Archive

Blue Diamond Cartier Ring Could Fetch $25 Million at Sotheby's

LONDON, United Kingdom — A diamond ring that’s the ultimate in bling is set to go under the hammer, with an estimated price of $15 million to $25 million. Sotheby’s auction house says the Cartier ring holds an 8.01 carat blue stone named the Sky Blue Diamond. It will be displayed in London on Thursday through Monday before a sale in Geneva on November 16. …