Largest Colorless Diamond Offered Sold for $27M
Jeweler Harry Winston bought the colorless, "flawless" diamond.
Precious Gems and Jewels in Photos
Christie's auctioned the "Archduke Joseph" diamond, which weighs 76.02 carats and was mined at the legendary Indian Golkonda mine, for $21.5 million to a phone bidder, a record for a colorless diamond at auction. It was expected to reach between $15 and 20 million in Geneva on Nov. 13, 2012. The diamond is about the size of a quail's egg and is named after the Archduke Joseph August of Austria. (Fabrice Coffrini/AFP/GettyImages)
