Blue diamond sells for more than $44 million at Christie's auction in Geneva

Christie’s says the largest fancy vivid blue diamond to ever come to auction has sold for more than $44 million, far outstripping the pre-sale estimate. Known as the “Bleu Royal,” the ring featuring a fancy vivid blue pear-shaped diamond of 17.61 carats was one of the standout pieces to go under the hammer Tuesday at the auction house for Geneva’s Luxury Week.