Gem Diamonds recently announced the recovery of a 125-carat high quality white, Type IIa diamond. The diamond was recovered on 20 December  2018 from the Letšeng mine in Lesotho; it is the 15th diamond greater than 100 carats to be recovered in 2018.

On 19 December 2018, the miner had announced the recovery of two high quality, white Type IIa diamonds from Letšeng: a 101-carat stone and a 71-carat stone, both recovered within a 24-hour period at Letšeng.

In November 2018, Gem Daimonds had published its production and sales performance report for Q3 (July 1 to September 30, 2018), showing a rise of 27 per cent in diamond production at Letšeng totaling 35,755 carats. Revenue for the period totaled $21 million, including the sale of eight diamonds for more than $1 million each.