Page last updated at 21:44 GMT, Tuesday, 12 May 2009 22:44 UK

Blue diamond fetches record price


The sale set a new record price

A rare blue diamond has sold for a record 10.5 million Swiss francs ($9.5m; £6.2m) at auction in Geneva.

It weighs 7.03 carats, is smaller than a penny piece, and is one of only a handful of blue diamonds in existence.

The anonymous phone bidder has yet to name the gem, mounted on a platinum ring, auctioneers Sotheby's said.

The diamond was found in Cullinan mine in South Africa last year, and its clarity was graded as flawless - the highest designation.

Auctioneer David Bennett said: "It is a new world record price for a blue diamond."

It had a pre-sale catalogue estimate of 6.8 million to 10 million francs, excluding commission.

'Beyond beautiful'

The hammer price excluding commission was 9.3 million francs.

The scarcity of the gems is in part down to the fact so few places in the world mine for blue diamonds.

Mr Bennett said: "For people who are looking to buy something that nobody else has, or somebody who wants something that is beyond beautiful, a blue diamond is going to be very difficult to find, so when they appear on the market, you have to have a go."


Sotheby's David Bennett speaking in April 2009: 'It is exceptionally beautiful and rare'

The stones get their colour when the chemical boron is present during formation.

In May 2008 a 3.73 carat diamond was sold by Sotheby's at auction for nearly $5m (£3.4m) setting the world record price per carat for any gemstone at auction.

Print Sponsor

Massive diamond found in Lesotho
21 Sep 08 |  Africa
Diamond handbag? That will be 1m
09 Jun 08 |  Business
Sales of diamonds fail to sparkle
08 Feb 08 |  Business

The BBC is not responsible for the content of external internet sites

Has China's housing bubble burst?
How the world's oldest clove tree defied an empire
Why Royal Ballet principal Sergei Polunin quit


Americas Africa Europe Middle East South Asia Asia Pacific