Mountain Province Diamonds: Record Carats, But a Race Against the Clock

Amid record output from Gahcho Kue, a deepening liquidity crisis and a small-stone price collapse push the miner to the brink.

MPVD.TO · Earnings Call · 2026-05-13

Record Production, Record Stress

Mountain Province Diamonds delivered a quarter of operational superlatives: a record 2 million carats recovered, a grade of 2.64 carats per ton versus 0.82 a year earlier, and a waste-inclusive cost per carat that fell to CAD 53 from CAD 192. Yet the carat recovered milestone was overshadowed by an equally stark financial setback. The company reported a CAD 600,000 adjusted EBITDA loss for Q1 2026, a net loss of CAD 65.1 million, and a working capital deficit of CAD 63.1 million. “The story of Q1 is one of strong operating performance with higher grades offset by a weaker diamond price environment, resulting in a CAD 600,000 EBITDA loss for the quarter.” — Jonathan Christopher Comerford, President and Chief Executive Officer · 2026-05-13 The tension could not be more pronounced. On one hand, the mine is producing more diamonds than ever, on better ore, at lower unit cost. On the other, the market is paying so little for its output that the company cannot generate enough cash to cover its obligations. This is the paradox that defines Mountain Province today: an efficient producer trapped in a brutal pricing environment with an existential liquidity problem.

The Small-Stone Trap

The crux of the pricing problem lies in the size distribution of Mountain Province's production. While grades are high, the stones skew heavily toward smaller categories. In the Q&A, VP Reid Mackie quantified the exposure: “we're usually looking at around from a value perspective, about 20%. 'll kind of say 20%, 30% just to keep it vague. We obviously have, though, an important exposure there in terms of volume, where it is sitting kind of more in the neighborhood of 80%.” — Reid Mackie, Vice President, Diamond Sales and Marketing · 2026-05-13 This small stones overhang is particularly damaging because smaller diamonds are precisely the segment where price declines have been steepest. Larger, high-quality stones have shown some stability, but they are a minority of Mountain Province's carats—and its revenue. The result is an average selling price of US$34 per carat in Q1 2026, down from US$72 a year earlier. Even with record carat recovery, revenue fell to CAD 40 million from CAD 44 million. The compression in value per carat is the fundamental driver behind the company's inability to convert operational gains into financial health. Natural diamond marketing remains a strategic hope, but the market is not yet rewarding the supply-side discipline.

The Cash Cliff and the June 30 Deadline

The financial distress is not abstract. Accounts payable ballooned to CAD 169 million from CAD 126 million at year-end, driven largely by CAD 47 million in bulk fuel deliveries over the winter road. More critically, cash calls owing to De Beers, the operator and majority owner, have surged. CFO Steven Thomas detailed the escalation: “The accounts payable balance at the year-end includes the cash calls owing to De Beers of CAD 30 million at the year-end, which by the end of Q1 2026 had increased to CAD 81 million, and by April 30th this year to closer to CAD 123 million.” — Steven Thomas, Chief Financial Officer · 2026-05-13 The company is effectively being financed by its partner's patience and by the goodwill of Dermot Desmond, who has provided working capital and extended the repayment dates on a working capital facility and bridge loan to June 30. This is the countdown. The company has been handed a short runway, and its survival hinges on successful negotiations with De Beers over cash calls and in-kind elections, as well as alternative financing through the LETL program. The CEO, Jonathan Comerford, was characteristically cautious but clear about the stakes:

We need to navigate a very challenging diamond market caused by geopolitical and U.S. tariffs, which has resulted in diamond prices at significantly low levels, with an aim to come up with a solution to the company's liquidity challenges.
Jonathan Christopher Comerford, President and Chief Executive Officer · 2026-05-13

The seasonal pattern exacerbates the pain: roughly 75% of the mine's cash requirements occur in the first half, while sales are lumpy—only two sales in Q1, three expected in Q2. This front-loaded cash burn means that even a modest improvement in pricing later in the year may not come soon enough if the company cannot bridge the gap to June 30.

Market Backdrop and the Canadian Supply Story

The broader diamond market remains deeply challenged. Reid Mackie noted that the Middle East war has disrupted Dubai's trading center, and U.S. tariff uncertainty persists. Yet there are glimmers of hope in the supply side. Diavik has ceased production, and Ekati's filing for CCAA leaves only two operating Canadian mines—Gahcho Kue and Ekati (though Ekati's fate is uncertain). This tightening of Canadian supply, combined with growing demand for responsibly sourced natural diamonds, could eventually strengthen the strategic position of the remaining mines. As Reid had argued a year earlier: “We haven't seen this low level of supply as I mentioned in my brief chat there since the GFC and pandemic.” — Reid Mackie, Vice President, Diamond Sales and Marketing · 2024-11-09 But that structural support has yet to translate into better realizations for Mountain Province's output, especially for its small-stone-heavy profile. Meanwhile, the operational discipline that allowed the company to bring NEX ore forward and improve grades is a reminder of its underlying capability. In 2025, Mark Wall had highlighted the promise of NEX: “Right. Well, in current pricing, the NEX ore body has a better quality frequency distribution. It has a better size frequency distribution, and it has a better grade. So it's all around better.” — Mark Wall, President and Chief Executive Officer (CEO) · 2025-05-14 That promise is now being realized in grade, but not in value, because the market has moved against the smaller stones that NEX's superior size distribution was supposed to mitigate. Mountain Province is at an inflection point. It has the operational machine to be a low-cost producer, but the financial structure is strained to the breaking point. The next few months will test whether the company can convert its operational strengths into a sustainable future, or whether the small-stone price trap and the liquidity cliff will prove insurmountable. The winter road may bring supplies, but it is the runway to June 30 that matters most.