The 10.3-carat ‘Mediterranean Blue’ diamond fetches $21.5 million
“The Mediterranean Blue,” a 10.3-carat fancy vivid blue diamond sold for $21.5 million during Sotheby’s sale of High Jewelry in Geneva on Tuesday. It was not only the top lot of the sale, but it was the marquee item during the series of jewelry auctions held in Geneva. The bidding for the cushion modified brilliant-cut […]