Mothae mine is restarting operations which had been halted since late March to help curb the spread of the coronavirus.
The mine said it plans to escalate operations at the mine to 75% capacity as some covid-19 restrictions remain in place.
Commercial production at Mothae began in January last year, with the opening of a new 1.1 million tonne-per-year plant that is progressively ramping up to its nameplate capacity.
It produced more than 30,000 carats in its first year of operations, including three diamonds of more than 100 carats each.
Lucapa has a 70% stake in the operation. The government of Lesotho owns the remaining 30%.
The mine is located only 5km from Gem Diamonds’ (LON:GEMD) Letšeng, the world’s highest dollar-per-carat kimberlite diamond mine.
The company also has a 40% stake in the prolific Lulo mine in Angola, where operations resumed partially in May.