553 Carat Rough Diamond Recovered by Gem Diamonds

By Erika W.

Gem Diamonds Ltd. has recovered the 15th largest colorless diamond in the world. The 553 carat rough D color Type II diamond was unearthed at the company’s Letseng Mine in Lesotho. The massive diamond has not yet been named and is undergoing further assessment in Antwerp.

The Letseng Mine is known for producing exceptionally large and rare rough diamonds. Several have been recovered from the mine including the 493 carat Letseng Legacy, the 478 carat Light of Letseng, and the 603 carat Lesotho Promise. (shown below)

The 603 carat Lesotho Promise

603 carat Lesotho Promise rough diamond
Photo: Graff

Unearthed in 2006, the 603 carat Lesotho Promise yielded 26 diamonds including the following four D FL stones: 76.41 carat pear, 43.12 carat heart, 27.03 carat round brilliant, and a 20.05 carat emerald cut.

The Lesotho Promise Necklace
Photo: Graff

The Lesotho Promise necklace by Graff with the 26 diamonds (all D FL) from the 603 carat rough.

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