A diamond, which is worth thousands of pounds, has fallen from sky somewhere between Lincolnshire and Lea, Gainsborough. It shall belong to the person, who will find it.

The Daily Mail reported that it is a £12,000 cushion cut diamond and was put on a steel frame. It was then attached to a big helium balloon and set free into space as a publicity stunt on Thursday by 77 Diamonds, a London jewellery firm.

The balloon reached at its highest peak and then popped because of change in atmospheric pressure. The rock tied to it parachuted back to the Earth.

After taking help from the UK Civil Aviation Authority, the jeweller estimated that it has landed somewhere in a five kilometre radius of Lea in Gainsborough.

The diamond was launched around 9 a.m. from Derbyshire and is expected to land on the Earth somewhere around noon.

The diamond is fitted with a tracking device and the firm will keep tweeting clues about it for gem hunters to join the search.

The diamond was hand-picked by chiefs at the largest selection of natural diamonds in the world and it was chosen for its sparkle and brilliance.

The diamond is a modified cushion brilliant cut which is similar to the engagement rings of Jessica Biel and Kim Kardashian.

The name of the company, 77 Diamonds, has been derived from the first diamond engagement ring given to Mary of Burgundy by the Archduke Maximilian I of Austria in 1477, said that the publicity stunt was done to create awareness of the access of the company to 80% of the finest polished diamonds in the world.

It also aims to promote its interactive universe which is called diamonds in the sky that allows users to fill a virtual night sky with thousands of stars with each star unique and named after someone special.