S&P downgrades Botswana’s credit rating as global diamond slump deepens

Botswana, Africa’s leading diamond producer, is facing mounting economic headwinds after S&P Global Ratings downgraded the country’s sovereign credit rating, citing a prolonged downturn in the global diamond market that is expected to persist longer than initially forecast.

The credit rating agency lowered Botswana’s long-term foreign and local currency sovereign credit ratings to BBB- from BBB. The short-term foreign and local currency ratings were also cut to A-3 from A-2. S&P maintained a negative outlook, signaling the potential for further downgrades if economic pressures continue to intensify.

The downgrade underscores the structural vulnerabilities of an economy heavily dependent on a single commodity. Diamonds account for approximately 70% of Botswana’s export earnings and about one-third of government revenue, leaving public finances acutely sensitive to fluctuations in global demand.

According to S&P, the diamond industry is undergoing a fundamental shift. Lab-grown diamonds have captured an estimated 20% of the global market by value and up to 50% by volume in the United States engagement ring segment, significantly eroding demand for natural stones. This structural change has been compounded by weak consumer spending in key markets such as China, a broader shift toward gold jewelry, and a general slowdown in luxury goods purchases.

The impact on Botswana’s mining sector has been severe. Debswana, the country’s primary diamond mining company jointly owned by the government and De Beers, has implemented sharp production cuts. Output fell 27% to 17.9 million carats in 2024 and declined further to 15.1 million carats in 2025. Production is expected to remain around 15 million carats in 2026, a level roughly 40% below 2023 volumes. Several mines have faced temporary closures as the company adjusts to weakened demand.

The economic fallout extends beyond the mining sector. S&P projects Botswana’s economy will grow by only 2.5% in 2026, following contractions of 2.8% in 2024 and 0.4% in 2025. The fiscal deficit is expected to reach 8.9% of GDP in the 2026/27 financial year, a marginal improvement from 9.3% the previous year.

Despite Botswana’s long-standing reputation as a success story in African resource management, the current crisis highlights the limits of a diamond-dependent economic model. Analysts warn that without significant diversification into sectors such as tourism, manufacturing, and financial services, the country’s fiscal stability and growth prospects will remain vulnerable to global market shocks.

Compounding these challenges are rising public spending pressures and persistently high youth unemployment, which together underscore the urgent need for structural economic reform. A sustained recovery, economists say, will require either a robust rebound in diamond demand or accelerated progress in building a more diversified and resilient economy.