Not for more than a century - when the Mona Lisa went disappeared for two years - has such a brazen heist happened at arguably the world's most famous museums.

But over the weekend, four power tool-wielding thieves made off with eight pieces of 19th-century jewellery from the Louvre in Paris.

• Guest: Joanna Hardy, fine jewellery consultant - a specialist on the BBC's beloved 'Antiques Roadshow'.
• Producer: Eddy Diamond