When it was auctioned by Christie’s in Geneva in November 2013, this incredible stone, simply referred to as The Orange, was by far the largest fancy vivid orange diamond to be sold this way. Unsurprisingly, it fetched a record-breaking bid as well, which rose to an amazing $35.5 million, blowing its estimated value of $21 million out of the water. At almost $2.4 million per carat, this eye-catching gem also set a world record price per carat for any colored diamond sold at auction.
The Tereschenko Blue Diamond (Терещенко). 42.92 carat, pear-shaped. Its original owners were the Tereschenko's, a family of sugar magnates in pre-communist Russia. In 1915, Mikhail Tereschenko instructed Cartier to mount the gem as the centerpiece of a necklace containing a variety of fancy colored diamonds.