Giant diamond in necklace sells for $33.7M at Geneva auction

Giant diamond in necklace sells for $33.7M at Geneva auction

The largest-ever D-flawless diamond to be put up for auction, mounted in a diamond and emerald necklace, has sold for $33.7 million at Christie's in Geneva, including buyer's fees.The white, matchbox-size "Creation 1" diamond from Swiss jeweler de Grisogono weighs a whopping 163 carats.The hammer went down at 29.5 million Swiss francs ($29.7 million), excluding the buyer's premium — around the midpoint of the pre-sale estimate range.The buyer was not immediately identified.Also on the block T...