A 114 carat diamond has been discovered at Letšeng mine in Lesotho. This is the fourth mineral Gem Diamonds has recovered from the mine in recent weeks.
The mineral described by the London-listed firm as a Type I diamond, is among the 245 ct diamond recovered in June, while 125 and 129 carat found in May this year.
The Letšeng mine is among the ten biggest diamond producers by revenue. The company, known for the recovery of large, high-quality stones in 2020, has seen output of those diamonds become less frequent over the past year. In 2021, Gem Diamonds found only six diamonds over 100 carats at Letšeng. This compares to 16 rocks of more than 100 carats discovered in 2020.
The find comes as prices for small diamonds have jumped about 20% since the start of March, as cutters, polishers and traders struggle to source stones outside Russia. State-owned Alrosa (MCX: ALRS), the world’s top diamond producer by output, was hit with US sanctions following Moscow’s invasion of Ukraine. Higher prices for lower-end stones are good news for miners, but not a game changer, experts say. While every mine is different, a general rule of thumb is that 20% of production the best stones account for about 80% of profits.
Since acquiring Letšeng in 2006, the company has found more than 60 white gem quality diamonds over 100 carats each, with 16 of them recovered last year. At an average elevation of 3,100 metres (10,000 feet) above sea level, Letšeng is also one of the world’s highest diamond mines.