"The Blue" is the largest flawless vivid blue diamond in the world at 13.22 carats.
Click through this slideshow to see five jewels that will be included in Christie's May 14 sale.
Geneva--The world's largest flawless vivid blue diamond is expected to sell for as much as $25 million next month, when the 13.22-carat gem hits the auction block at Christie's Magnificent Jewels sale.
Named "The Blue," the diamond is leading the 250-lot auction, scheduled for May 14 at the Four Season Hotel des Bergues in Geneva.
Also to be offered at the sale is a range of colored and colorless diamonds, including the "Ocean Dream," the largest fancy vivid blue-green diamond in the world at 5.50 carats. It is expected to fetch from $7.5 million to $9.5 million.
Meanwhile, a pear-shaped colorless diamond that is 75.97 carats and graded as a D flawless has a pre-sale high estimate of $15.5 million.
Jewels by JAR, Cartier and Van Cleef & Arpels also will be included in the sale.
