Blue diamond fetches over £13.7 million at Christie's

A 13.22 carat diamond known as "The Blue" has fetched over £13 million at an auction at Christie's auction house in Geneva, according to AFP.

The sale comes a day after Sotheby's sold a 100-carat flawless yellow diamond for £9.7 million.

"The Blue" diamond sold for over £13m. Credit: REUTERS/Denis Balibouse

US jeweller Harry Winston bought the blue diamond, described by Christie's as the largest fancy vivid blue diamond in the world.