The largest Vivid Blue diamond ever to appear at auction has sold for $57.5 million. The 14.62-carat Oppenheimer Blue diamond easily outstripped the last record-holder for ‘most expensive blue diamond;’…
The largest Vivid Blue diamond ever to appear at auction has sold for $57.5 million. The 14.62-carat Oppenheimer Blue diamond easily outstripped the last record-holder for ‘most expensive blue diamond;’…
