Graff Diamonds staff are said to have spent thousands of hours making the lady's watch,which had a colourful layering of diamonds,
Laurence Graff, the chairman and founder of Graff Diamonds, started out as a jewellery apprentice and founded the company in 1960.
In 1967, with stores already open in London, Mr Graff expanded his business into Asia, opening up a jewellery concession in Singapore.
Six years later, he became the first jeweller to win a Queen's Award to Industry. He went on to win this again in 1977, 1994 and 2006.
The company, which has flagship shops in Knightsbridge and on New Bond Street, opened its first store outside the UK in Monaco in 2000.
Graff Diamonds now has outlets across the world, including in the United States, Russia, South Africa, China and Japan.
Mr Graff was awarded an OBE in 2013 for services to jewellery.
- Daily Mail