Rio Tinto exits diamond mining at Diavik, completing its multi-decade stretch after producing over 150 million carats from the mine. Following Argyle’s 2020 closure, production fell sharply, tightening global supply and accelerating industry consolidation.
More Than 10% of De Beers Sightholders Expected to Lose Supply
On Friday, March 20, 2026, Sightholders are expected to find out whether they will be offered a supply contract renewal or lose their Sight.
The new supply contracts will begin on July 1, 2026.