A 101.27 carat diamond, the size of a ping pong ball, has been sold at auction in Hong Kong for more than $6m (£3m). The stone is the largest colourless diamond to appear at auction in 18 years, says auction house Christie's.
Set in a tiara, the diamond is one of only four colourless diamonds of over 100 carats to have come up for sale. The auction was the biggest jewellery sale ever conducted by Christie's in terms of value.
More than $60.1m worth of jewellery was sold at the event in Hong Kong. The diamond was the largest ever sold in Asia.
Christie's said the diamond's appearance on the market had "created a sensation".