Why are Picasso's ceramics cheaper than his paintings?
20 June 2013 Last updated at 11:16 BST
A vase by Pablo Picasso has sold at auction in London for almost £1m to an anonymous bidder.
It is a world record price for a ceramic piece by the Spanish artist but his paintings sell for much higher prices.
The BBC's Will Gompertz told Winifred Robinson why Picasso's paintings are considered more valuable than his ceramics.