• Diamond sales increased 249.9% to US$71.61 million between January 1 and October 27, 2026, according to MMCZ
• Zimbabwe's average rough diamond export value declined from US$53.18 per carat in 2023 to approximately US$24.72 during January–September 2026
• ZCDC is seeking to reduce royalties from 10% to 5% and secure US$7.2 million in additional capital to improve operational viability

Harare - Zimbabwe's diamond sales surged 249.9% to US$71.61 million during the first ten months of 2026, but a sustained decline in the value realised from each carat continues to constrain the industry's recovery, placing pressure on the financial viability of the country's main state-owned diamond producer.

The latest Minerals Marketing Corporation of Zimbabwe (MMCZ) trading figures imply that sales increased from approximately US$20.47 million during the comparable period in 2025, although historical export records show that the country's average diamond export value has fallen by more than half since 2023. The recovery in reported sales comes as Zimbabwe Consolidated Diamond Company (ZCDC) targets five million carats in annual production, seeks additional shareholder capital and presses for reductions in royalties and foreign-currency surrender requirements.

The latest diamond sales accounted for just 1.4% of the US$5.013 billion in minerals marketed through MMCZ between January 1 and October 27. Lithium generated US$2.310 billion and platinum group metals contributed US$1.793 billion, demonstrating the relatively limited financial contribution of diamonds within Zimbabwe's non-gold mining portfolio. The diamond increase nevertheless represents one of the largest percentage gains among the commodities reported, creating an opportunity to assess the underlying quality of the recovery.

The comparison requires closer examination because the reporting period and measurement basis differ across available datasets. MMCZ's latest figures imply a relatively low 2025 comparative sales base, while official Kimberley Process records show that Zimbabwe exported US$125.18 million in rough diamonds during the full 2025 calendar year. The October trading update does not provide sufficient information to reconcile the implied 2025 comparison with the full-year export series. The reported 249.9% growth must therefore be read as MMCZ's published comparison rather than evidence that the industry's total annual export earnings have increased by the same proportion.

The longer-term export statistics reveal the scale of the pricing challenge. Zimbabwe exported 5.59 million carats worth US$297.38 million in 2023, generating an average of US$53.18 per carat. Export volumes increased to 7.77 million carats in 2024, but earnings declined to US$234.39 million as the average realised value fell to US$30.16 per carat. During 2025, the country exported 4.61 million carats valued at US$125.18 million, equivalent to US$27.16 per carat.

More recent figures indicate that the pricing pressure continued into 2026. Zimbabwe sold approximately 2.52 million carats for US$62.3 million during January to September, yielding an average of US$24.72 per carat. That represented a decline of approximately 53.5% from the 2023 average, demonstrating the deterioration in the value generated from each exported carat. The nine-month figures are not directly comparable with full-year totals for production or revenue without adjusting for shipment timing and product composition.

 At the 2023 average export value of US$53.18 per carat, five million carats would generate approximately US$265.9 million in gross sales. At the January–September 2026 average of US$24.72, the same volume would generate US$123.6 million. The difference of US$142.3 million illustrates the revenue sensitivity to realised prices and product quality. These figures are hypothetical calculations, not forecasts of ZCDC earnings, since the national export average covers multiple producers and different diamond assortments.

ZCDC has attributed its difficult trading conditions to weak international diamond demand, growing competition from laboratory-grown stones and the characteristics of its predominantly alluvial deposits. Chief executive Douglas Zimbango told lawmakers in May that rough diamond prices had declined from a previous peak of approximately US$79 per carat to as low as US$22, while Zimbabwe's typical stones were expected to command between US$22 and US$34 per carat during 2026.

The company also identified shortcomings in its marketing framework and alleged market collusion among the factors affecting realised prices. These claims require independent examination through tender records, buyer participation, diamond grading information and transaction-level sales data. A decline in average prices can reflect international market conditions, changes in stone quality or sales composition, while weaknesses in marketing arrangements would require separate evidence.

The state-owned producer is targeting five million carats in 2026, compared with the 3.8 million carats it reported producing in 2025. Achieving that target would require a production increase of approximately 31.6%. However, higher volumes alone cannot restore earnings to previous levels if additional output continues to attract weak prices.

The operating environment has also increased pressure on ZCDC's finances. The company has proposed reducing the diamond royalty rate from 10% to 5% of sales and increasing foreign-currency retention from 70% to 80%. It is also seeking to resolve a 2.5% depletion fee that management says remains reflected in its obligations despite earlier policy changes.

At US$71.61 million in industry-wide diamond sales, a 10% royalty would represent US$7.16 million before adjustments, exemptions and differences in assessment bases. A reduction to 5% would halve that illustrative amount. The calculation does not represent actual royalties paid by ZCDC or other producers, but demonstrates the immediate trade-off between government mineral revenue and relief for an industry experiencing weaker realised prices.

ZCDC has separately outlined a proposed US$7.2 million capital injection to support a transition towards an owner-mining operating model. The strategy is intended to reduce reliance on contracted mining arrangements and improve control over equipment deployment and operating costs. Its commercial success will depend on equipment utilisation, maintenance expenditure, mining productivity and the cost per carat recovered.

The company also intends to develop kimberlite resources as part of its longer-term production strategy. These deposits could provide a different production and product-quality profile from existing alluvial operations, although their economic viability depends on resource grades, mine development expenditure, recovery rates and the quality distribution of diamonds recovered. Exploration results and feasibility assessments are required before assigning additional revenue to the proposed transition.

The role of the Mutapa Investment Fund introduces a wider public-finance dimension. As the shareholder responsible for ZCDC, the fund must evaluate the return on additional capital against the company's operating performance and the realistic earnings potential of its resource base. Any recapitalisation should be accompanied by measurable cost-reduction targets, production milestones and improvements in realised sales performance.

The diamond industry's recovery also needs to generate economic benefits for communities surrounding mining operations. Employment, local procurement, environmental rehabilitation and community development depend on the financial performance of producers and the enforcement of their obligations. Lower mineral prices can reduce available resources, making transparent reporting of expenditure and delivery increasingly important.

Zimbabwe's latest diamond sales figures provide evidence of renewed marketing activity, but the long-term export series demonstrates a persistent deterioration in value per carat. The 249.9% increase reported by MMCZ should therefore be assessed against physical volumes, grade composition, tender prices and actual cash generated by producers. For ZCDC, achieving five million carats will have limited financial benefit if recovery costs exceed the margins available from sales. The industry's next phase requires improvements in realised value, operating efficiency and financial accountability, supported by independently verifiable production and marketing results.

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