De Beers blinks: the July sight and the end of the polite fiction
The miner opens its July sight in Gaborone this week prepared to do what sightholders have demanded for two years — bring official rough prices back into contact with the market they supposedly describe.
By The Rough Desk
What changed
For most of the downturn, De Beers ran two price lists.
What it means
- Closing the book-to-market gap costs De Beers pride and revenue in the short run and buys back something more valuable — a price signal the trade can believe. Rough markets do not recover on sentiment; they recover on cleared inventory and honest numbers.
- This week is the honest-numbers week.
Key figures
| book above market, under 1 ct | 20–30% |
|---|---|
| the gap in larger sizes | 5–15% |
| Alrosa 2–10 ct rough since January | +6–9% |
| Alrosa May viewings vs last year | 2× |
Source: the book vs the market
Two price lists, one market
There was the official book — the one sightholders were asked to buy against — and there was the market, which sat, by sightholder estimates, twenty to thirty percent below it in rough under a carat and five to fifteen percent below in larger sizes. Everyone in the pipeline knew the gap existed.
The July sight, opening this week in Gaborone, is where the company finally moves to close it.
The mechanics matter less than the signal. De Beers can cut the book outright, or it can widen the discounted bulk deals it has been quietly running for select clients since the spring.
Either way, executives telegraphed the shift in a run of client meetings across Mumbai, Dubai and Antwerp — a tour that sightholders read, correctly, as the end of the era of defending price over volume.
How far the book sat above the market · sightholder estimates, %
Source: the book vs the market
The market finally gave the company room
What makes the move possible is that the market has finally given the company room. Small rough — the category that spent 2025 in the deepest hole — has firmed sharply this year.
Alrosa logged record client viewings in May, more than double last year's level, its busiest count in eight years, and has pushed prices on two-to-ten-carat rough up six to nine percent since January.
One sightholder executive put the logic plainly: the market is much stronger, so it is an opportunity to align prices without creating weakness.
| Figure | |
|---|---|
| Rough Under 1 Ct | 20–30% |
| Larger Sizes | 5–15% |
Everyone in the pipeline knew the gap existed The polite fiction, measured: the official book's premium over the market it supposedly describes. Carat Capital graphics desk.
Subtraction is doing the supply side's work
The supply side is doing its part through subtraction. Alrosa is suspending mining at Severalmaz for roughly three months from July 1 to manage rough supply. Storm Mountain Diamonds placed Lesotho's Kao mine on care and maintenance the same day, citing weak prices, diesel costs and lab-grown competition — some 750 workers affected.
Petra Diamonds' Finsch mine entered business-rescue proceedings, with about 1,800 jobs in the balance. Painful as the individual stories are, the aggregate is the same medicine the natural pipeline has needed: less rough chasing the same demand.
Hanging over all of it is ownership. Botswana, already a fifteen-percent shareholder, is negotiating with the UAE and Oman over a possible acquisition of Anglo American's stake, while Namibia weighs a NAD 3 billion co-investment alongside Botswana and Angola.
A producer-country consortium owning the world's most famous diamond marketer would remake the politics of rough pricing entirely — and July's realignment would look, in hindsight, like the first act of that remaking.
The story so far
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Method
Everyone in the pipeline knew the gap existed