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This photograph taken on May 11, 2023, shows an employee of Sotheby's auction house holding the Bulgari "Laguna Blu" pear-shaped fancy vivid blue diamond weighing 11.16 carats in Geneva, which is expected to fetch at least 25 million USD at the Sotheby's "Magnificent jewels and noble jewel sale" scheduled for May 16. (Photo by Fabrice COFFRINI / AFP) (KEYSTONE/AFP/FABRICE COFFRINI)