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 going dark and the primary price list coming down to meet reality. By Friday, the question on every desk was no longer whether the rough market resets — it was what Monday's De Beers sight will look like when it does.

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 single compliant bid, tipping the operation toward closure. The pattern D-Loupe has tracked all year — Diavik's final production in March, Finsch entering business rescue in June — now spans three production regions, and the common thread is capital, not geology: these assets are leaving because nobody will fund them at current rough prices. For buyers, the practical consequences differ. Venetia is a defined window — the ore body waits, but South African assortments built on its goods now carry a shelf life. Ekati looks terminal, and Canadian-origin programs, which command a documented provenance premium in Western retail, lose their anchor supply.

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 to 45–50, and 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%–30% above market on smaller goods and 5%–15% on larger ones. This follows a Q1 in which its average realised 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 off for years, can no longer be assumed. Fewer carats at honest prices, sold to fewer hands.

Demand: the recovery still belongs to small stones

Against the shrinking supply side, demand data kept telling the same, narrower story. The RAPI for 0.50-carat goods firmed through the month — +0.85% at the start of July, +1.31% by this week — while the 1-carat 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 — the first positive monthly print after FY 2025–26 closed down 8.5% at $12.2 billion. Antwerp's half-year figures rhymed, with volumes growing faster than value — the signature of manufacturers restocking commercial categories rather than chasing large stones. A weaker rupee (96.28 to the dollar, +0.99% on the week) gives Indian cutters margin room to keep buying into that recovery; gold at $4,019/oz, off 3.9% on the month, eases metal costs at the jewellery end.

The week's contradiction is worth naming: prices are being cut into a market where supply is contracting and small-stone demand is turning up. If the sight clears well, the trade may look back on this as the week the floor was set.

מה לעקוב בשבוע הקרוב / The Week Ahead

• The De Beers July sight opens Monday, July 20, in Gaborone — the first hard test of the new price alignment, and of the slimmed sightholder list.
• Watch secondary-market premiums on boxes after the sight: a healthy premium would confirm the list is now below replacement demand.
• De Beers' Q2 production report is due toward the end of July — the next read on realised prices after Q1's $101/ct.
• GJEPC's July monthly data will show whether India's June export turn (+8.71%) was a pivot or a blip.
• Any receivership developments at Ekati — timing of closure defines how fast Canadian goods tighten.