Firestone Diamond Plc (LON:FDI) told investors it has unearthed a 46-carat white diamond from its Liqhobong Mine in Lesotho.
The stone was recovered undamaged and will go on sale at the end of January 2019, the company said in a statement.
Also, Firestone highlighted a stabilisation in diamond prices for smaller, lower value stones at a recent sale, earlier this month. The company noted that this confirms the trend reported by other producers.
"The recovery of the white 46 carat stone is good news as we start mining across the pit towards the northern side of the orebody over the coming months,” said Paul Bosma, Firestone chief executive.
“We are also pleased by the fact that the prices of our smaller, lower value goods have stabilised and we look forward to further improvement as we head into the new year on the back of an expected positive diamond jewellery retail season."