The Rough Market Is Shrinking From Both Ends

The diamond trade spent this week watching supply leave the market from two directions at once: mines moving toward closure or suspension, and the primary price list coming down to meet market reality. By Friday, the central question was no longer whether the rough market would reset, but what Monday’s De Beers sight would look like once it did.

Supply: Two Mines Out in One Week

On Monday, De Beers announced a two-year production pause at Venetia, its flagship South African operation, as part of a cost-cutting drive ahead of the company’s sale. Two days later, the sale process for Canada’s Ekati mine closed without a compliant bid, moving the operation closer to closure.

The pattern D-Loupe has tracked all year now spans three production regions: Diavik delivered its final production in March, Finsch entered business rescue in June, and Ekati is now under severe pressure. The common thread is capital, not geology. These assets are leaving the pipeline because investors are unwilling to fund them at current rough prices.

For buyers, the practical consequences differ. Venetia has a defined pause: the ore body remains, but South African assortments built around its goods now carry a time limit. Ekati looks more uncertain, and Canadian-origin programs that command a documented provenance premium in Western retail may lose an anchor supply source.

Prices: The List Comes Down to the Market

The other half of the reset is deliberate. Through the July sales cycle, De Beers cut official prices and narrowed its sightholder roster from roughly 70 buyers to 45-50. It has now told clients in Mumbai and Dubai that it will align book prices with market levels at the sight opening Monday in Gaborone, after running 20% to 30% above market on smaller goods and 5% to 15% above market on larger ones.

This follows a Q1 in which De Beers’ average realized price fell 19% year on year to $101 per carat. The strategic meaning is larger than the discount. The fixed premium between primary and secondary rough, a psychological anchor the trade has priced from for years, can no longer be assumed.

Fewer carats, more realistic prices, and fewer authorized buyers: that is the shape of the new primary market.

Demand: The Recovery Still Belongs to Small Stones

Against the shrinking supply side, demand data kept telling the same narrow story. The RAPI for 0.50 ct goods firmed through the month, rising from 0.85% at the start of July to 1.31% by this week, while the 1 ct index stayed marginally negative at -0.19%.

India confirmed the direction. June polished exports came in at $847 million, up 8.71% year on year, marking the first positive monthly print after FY 2025-26 closed down 8.5% at $12.2 billion. Antwerp’s half-year figures showed a similar pattern, with volumes growing faster than value. That is the signature of manufacturers restocking commercial categories rather than chasing large stones.

A weaker rupee, at 96.28 to the dollar with USD/INR up 0.99% on the week, gives Indian cutters some margin room to keep buying into that recovery. Gold at $4,019 per ounce, down 3.9% on the month, also eases metal costs at the jewelry end.

The week’s contradiction is worth naming: prices are being cut into a market where supply is contracting and small-stone demand is improving. If the sight clears well, the trade may look back on this as the week the floor began to form.

The Week Ahead

• De Beers July sight: The sight opens Monday, July 20, in Gaborone. It will be the first hard test of the new price alignment and the slimmed sightholder list.
• Secondary-market premiums: Watch box premiums after the sight. A healthy premium would suggest the list is now closer to replacement demand.
• De Beers Q2 production report: Due toward the end of July, this will provide the next read on realized prices after Q1’s $101/ct.
• GJEPC July data: July export figures will show whether India’s June export recovery, up 8.71%, was a pivot or a one-month bounce.
• Ekati receivership developments: Any update on timing will define how quickly Canadian-origin goods tighten.