Graff’s Lesotho Promise necklace was designed from the 603 carat Lesotho Promise diamond stone, the 15th largest rough diamond ever recovered, found in the Letsenf diamond mine in the African country of Lesotho.

It was sold to Graff and its partner polishing company Safdico for $12.36 million in October last year.

Graff who cut the diamond into twenty six smaller diamonds ranging from .52 carats to the impressive 76.41 carat pear shaped at the tip of the necklace.

After 18 months of cutting and polishing, they have turned these those stones into one spectacular necklace, The Lesotho Promise Necklace.

The necklace contains every single diamond made from the Lesotho Promise diamond stone totaling 223.35 carats and the diamonds are set in white gold.

The stones are valued at $50 million but a value hasn’t been given for the finished piece.

The necklace is part of the company’s display of magnificent jewels in Monte-Carlo and is available for viewing until August 10 (hurry up !) at the Salle Empire, Hotel De Paris in Monte-Carlo .