Graff has unveiled the Lesedi La Rona, the largest square emerald cut diamond in the world.

The principal diamond revealed from the 1,109 carat Lesedi La Rona rough diamond has been named the Graff Lesedi La Rona.

It is the largest highest colour and highest clarity diamond ever graded by the GIA.


Announcing the news, Graff confirmed that from discovery to completion it took over 18 months to analyse, cut and polish the diamond.

It was discovered at the Lucara Karowe mine in Botwana and, commenting on the find, Laurence Graff said: “There is a huge amount of good fortune involved in unearthing a rough diamond of this extraordinary beauty and importance.”

He added: “Year after year can go by, month after month can pass, with nothing, then you get lucky.”

As well as the Graff Lesedi La Rona, a total of 66 ‘satellite’ diamonds were also polished from the world famous rough diamond.

They range in size from under a carat to in excess of 26 carats and are all inscribed with Graff, Lesedi La rona and its unique GIA number.