De Beers cuts diamond prices sharply as demand weakens

De Beers slashed official diamond prices at its July 2026 sale, a sharp reset that showed how much weaker demand has become and how little pricing power the company can still command. The cuts came at the first sale after De Beers sharply narrowed its handpicked buyer base, turning a once-wide sight system into a smaller, more selective club.

Industry reports put the roster at about 45 to 50 sightholders, down from roughly 69, and said more than 20 of the 69 were told they would not renew when new contracts started on July 1, 2026. JCK has noted that De Beers had more than 350 sightholders in the 1970s, a reminder of how far the pipeline has contracted. Cook said the company wanted to move from quantity to quality.

The pricing move matters because De Beers had long tried to keep official rough prices above the secondary market, even when that meant selling selectively at discounted levels to a handful of traders while holding its public list steady. Before the July cuts, official prices were said to have sat anywhere from 5% to 50% above the secondary market depending on stone category, with earlier July estimates putting book prices about 20% to 30% above market for rough under one carat and 5% to 15% higher for larger stones. In that context, the latest reductions looked less like a routine adjustment than a forced convergence.

That has downstream consequences for the trade. Lower rough prices can ease pressure on manufacturers and retailers carrying inventory, but they can also signal a weaker benchmark for natural diamonds at a moment when lab-grown stones are eating into the category’s value proposition. Weak Chinese luxury demand and broader pressure on rough pricing have already left the pipeline fragile, and De Beers’ decision suggests it is no longer willing, or able, to defend old list prices simply to preserve confidence.

Anglo American, which owns 85% of De Beers, has said it remains committed to divesting the company, even as De Beers keeps its 2026 production guidance unchanged at 21 million to 26 million carats. For investors, that leaves a blunt message: the old scarcity play is under strain, the buyers’ club is smaller, and the market is now testing what natural diamonds are really worth when De Beers follows the market instead of trying to lead it.