The largest rough diamond seen in more than 100 years could soon be yours.
The 1,109 carat diamond is going on the auction block at Sotheby's.
It's the second largest diamond ever found.
Known as the "Lesedi la Rona", the rock was discovered in Botswana last year.
The diamond is about the size of a tennis ball and expected to draw more than $70 million.
The gem will be on display at Sotheby's on the Upper East Side Saturday, ahead of the auction on June 29.