ALBAWABA - Sotheby's will auction a rare blue diamond, named the "Bulgari La Leggenda" diamond, in Geneva with an estimated price of between 22 to 25 million Swiss francs ($24 to $28 million). Weighing 11.16 carats, the rare gemstone will be sold on May 12 during the Geneva Magnificent Jewels auction. Sotheby's Geneva Luxury Week will feature a stunning 11.16-carat blue diamond at a whopping $25M price tag. https://t.co/tjN2qumeN2 What ...