De Beers Suspends Venetia Mine as Diamond Demand Slumps

Mining giant De Beers has halted production at its flagship Venetia mine in northern South Africa for two years, citing a sharp decline in demand for natural diamonds and increased competition from cheaper lab‑grown stones.

The mine, which accounts for more than 40 % of the country’s diamond output and employs around 4,000 workers, had been a key driver of the industry’s revenue.

De Beers’ decision follows a steep drop in prices across the market, especially in China, and a shift in consumer preference toward ethically sourced and more affordable lab‑grown gems.

The company, majority‑owned by Anglo American, has said the pause is part of a cost‑cutting and streamlining effort. Anglo American has recently explored selling its stake in De Beers to refocus on lucrative copper mining driven by the AI boom.

During the two‑year shutdown, De Beers plans to upgrade the mine’s infrastructure, boost efficiency, and enhance capacity, positioning the site for a future return when market conditions improve.

The move echoes a broader industry trend: as the rough diamond price index has almost halved since 2022, firms are reconsidering large‑scale mining operations in favour of more sustainable and profitable ventures.

De Beers has also entered the lab‑grown space, producing its own synthetic diamonds at a fraction of the cost of natural stones, reflecting changing consumer priorities around ethics and environmental impact.

The company’s legacy dates back to 1871 with founder Cecil Rhodes, whose colonial activities paved the way for the mining boom but also sparked ongoing debates about decolonising institutions bearing his name.

The temporary shutdown underscores the shifting dynamics of the diamond supply chain, prompting questions about future labour markets, investment, and sustainability in South Africa’s mining sector.