Money | diamonds Here's How Much Giant 163-Carat Diamond Went for at Auction $33.7M for largest D-flawless diamond ever auctioned off By Newser Editors and Wire Services Posted Nov 14, 2017 6:58 PM CST Copied A Christie's employee looks over a necklace suspending a 163.41-carat, D colour flawless, IIA type diamond during a preview at Christie's, in Geneva, Switzerland, Wednesday, Nov. 8, 2017. (Martial Trezzini/Keystone via AP) 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 AP reports. The buyer was not immediately identified. Also on the block Tuesday was Le Mazarin. The 19-carat pink diamond that once belonged to King Louis XIV, Napoleon Bonaparte, and other French rulers sold for a hammer price of $12.6 million, obliterating the pre-sale estimate. That diamond was up for auction for the first time in 130 years. Read These Next Her blood isn't compatible with anyone else's. Iran's supreme leader makes first public comments since ceasefire. New Fox star, 23, misses first day after car troubles. Rubio says the fate of Iran's conversion facility is what matters. Report an error