World’s biggest uncut diamond sells for $53m

The rough diamond had previously failed to meet its reserve price of more than $70 million at a Sotheby’s auction in 2016.

Graff is already the owner of a 373-carat diamond, which was bought earlier this year and formed part of the original stone.

Lesedi La Rona means “our light” in Botswana’s Tswana language. It could be cut into smaller gems for jewelry or left whole in a private collection.