The 9.51-carat “Mellon Blue” diamond sold for $25.5 million at Christie’s Geneva Magnificent Jewels auction, held Tuesday at the Four Seasons Hotel des Bergues. The fancy vivid blue pear-shaped ...
A flawless fancy vivid purplish pink diamond will be auctioned in June for US$35 million, or US$3.3 million per carat, the highest price per carat placed on any diamond or gemstone prior to its sale, ...