Auction house has describe the stone as \'internally flawless\', with prices predicted to reach as much as $55m.
The free outdoor exhibition stretches for 2km along the coastline and includes more than 100 works by artists from 18 countries.
In the former Soviet Union, bus stops were often an excuse for designers to try out their most outlandish ideas.
Paulette Tavormina\'s meticulously arranged photos look like still life paintings by the Old Masters.
iPad artist Kyle Lambert creates mind-boggling Morgan Freeman masterpiece
Rare orange diamond has fetched a record £22m at Christie\'s auction in Geneva.
Francis Bacon\'s painting, Three Studies of Lucian Freud has fetched $142m (£89m).
Renegade graffiti artist Banksy ended his month-long run in New York with a simple name tag on a building near the Long Island Expressway.
No one knows what he looks like, but his art is instantly recognisable. The world-renowned British artist Banksy has set up shop in New York City.
Shunga: Sex and Pleasure in Japanese Art examines explicit works from early modern Japan.
South Africa House in London\'s Trafalgar Square hosted the international launch of the \"We Love Mandela\" art exhibit on Wednesday (October 2) evening.
Kate Moss – From the Collection of Gert Elfering includes work by Annie Liebovitz, Sam Taylor-Wood and Allen Jones.
Prince William and Kate Middleton accept £2,000 painting for George\'s nursery.
Amsterdam\'s Van Gogh Museum unveiled a newly discovered work by the Dutch master Vincent Van Gogh on Monday (September 9).
Developers reduced size of window shields on City tower.
Seikou Yamaoka, a Japanese office worker in the central Japanese city of Osaka, has created a name for himself as a maestro in finger painting.
Police seized a painting of Russia\'s president and prime minister in women\'s underwear from a gallery in St. Petersburg late on Monday (August 26), saying the satirical display had broken unspecified laws.
Art Everywhere exhibition displays work in poster and billboard sites.
Bob Dylan: Face Value will open at National Portrait Gallery in London later this month.
Nigella Lawson and Charles Saatchi set to end 10-year marriage.