A rare blue diamond just sold for $44 million at a Christie’s auction

• A rare blue diamond set in a ring sold for $43.8 million at a Christie’s auction in Geneva.
• Christie’s said that the 17.61-carat diamond, the Bleu Royal, is among the rarest to exist.
• The Gemological Institute of America described the pear-shaped diamond as “internally flawless.”

A rare blue diamond set in a ring sold for 39.505 million Swiss franc ($43.8 million) at a Christie’s auction in Geneva on Tuesday.

The 17.61-carat Bleu Royal diamond is pear-shaped and is described as a “Fancy Vivid Blue” gem.