The latest blue diamond to hit the auction block certainly lives up to its namesake. The 10.03-carat Mediterranean Blue gem will be the crown jewel at Sotheby’s High Jewelry Auction this May ...

This established a world record price per carat for any diamond or gemstone ($5,178,124) which was previously held by The Blue Moon of Josephine, an Internally Flawless Fancy Vivid Blue cushion ...