Auction house Sotheby's failed to sell the world's largest diamond Lesedi la Rona weighing 1109 carats.

A diamond having the size of a tennis ball was found in November 2015 in Botswana at a mine owned by Canada’s Lucara Diamond Corporation. Its name means “our light” in the Tswana language.

 The estimated cost of the diamond was 50 million pounds (more than $ 70 million), The Guardian reported.

However, at an auction held in London on Wednesday, trading was stopped after price failed to overcome the mark of $61 million, a spokesman for Sotheby's said.

Lesedi la Rona is the biggest diamond in the world now.  It concedes only to the Cullinan diamond extracted in 1905 in the Republic of South Africa which initially weighed 3106 carats, but was split into many pieces.