Rare Martian Pink diamond sold for $17.4m in Hong Kong
A rare pink diamond has been auctioned for $17.4m (£11.1m) - far higher than expected - after six minutes of frenzied bidding in Hong Kong.
Auctioneers Christie's say that the diamond - the biggest of its kind ever to be sold - was bought by an anonymous telephone bidder.
The Martian Pink diamond is extremely rare. Its owner believed it would fetch the best price in Hong Kong.
The diamond had been expected to sell for between $8m and $12m (£5m - £7.6m).