The 478ct Leseli La Letšeng (Light of Letšeng)
The Leseli La Letšeng, which means Light of Letšeng, is a 478 carat D colour white diamond that was recovered from the Letšeng mine in Lesotho in September 2008. The name reflects the diamond's remarkable colour and clarity, the highest possible quality for a white diamond. The diamond is currently ranked in the top twenty largest rough white diamonds ever to be recovered and was the third significant recovery from Letšeng in as many years. The fame of this diamond extends further in that it revealed a 102.79 carat round shaped, D colour internally flawless diamond, making it the largest round shaped polished diamond ever to be graded. A further 10 exquisite polished diamonds were also revealed.
Light of Letšeng was sold on tender in Antwerp in November 2008 for US$18.4 million, to SAFDICO, the manufacturing arm of Graff Diamonds. The price represented an extraordinary price per carat of US$38 400, against a global average diamond price of US$90 per carat.