Africa’s leading diamond producer, Botswana, is facing renewed economic pressure as a prolonged slump in the global diamond market has prompted S&P to downgrade the country’s sovereign credit rating.

S&P Global Ratings downgraded Botswana’s sovereign credit rating due to a prolonged slump in the global diamond market.

Diamonds account for about 70% of Botswana’s exports and one-third of government revenue, making the economy highly vulnerable.

The rise of lab-grown diamonds and weak consumer demand, especially in key markets like China and the U.S., have sharply reduced natural diamond sales.

Debswana, Botswana’s main diamond producer, cut output significantly, with production expected to stay about 40% below 2023 levels through 2026.

Credit rating agency S&P Global Ratings has downgraded Botswana’s long-term foreign and local currency sovereign credit ratings to BBB- from BBB, citing prolonged weakness in the global diamond market.

This downturn is expected to weigh on the country’s minerals-dependent economy for longer than anticipated.

Botswana is one of the world’s leading producers of natural rough diamonds and Africa’s largest diamond producer, with the sector historically accounting for about 70% of exports and roughly one-third of government revenue.

According to Reuters, the agency also lowered Botswana’s short-term foreign and local currency ratings to A-3 from A-2, while maintaining a negative outlook.

This signals the possibility of further downgrades if economic pressures intensify.

According to S&P, the downgrade reflects mounting vulnerabilities in an economy heavily dependent on diamonds. The global diamond industry has entered a prolonged downturn, with lab-grown diamonds capturing around 20% of the global market by value and up to 50% by volume in the U.S. engagement ring segment, significantly eroding demand for natural stones.

At the same time, weak consumer spending in major markets such as China, alongside shifting preferences toward gold jewelry and a slowdown in luxury spending, has further dampened demand.

The impact has already been felt in Botswana’s mining sector. Debswana, the country’s main diamond mining company, cut production at several mines throughout 2025 and temporarily shut others as demand weakened.

S&P noted that lab-grown diamonds have captured around 20% of the global market by value and up to 50% by volume in the U.S. engagement ring segment.

Output fell 27% to 17.9 million carats in 2024, before declining further to 15.1 million carats in 2025. Production is expected to remain around 15 million carats in 2026, roughly 40% below 2023 levels.

Despite its reputation as a model of resource management in Africa, Botswana’s heavy reliance on diamonds has left the economy vulnerable to global market shocks. Limited diversification means fluctuations in diamond demand quickly translate into fiscal pressure and slower economic growth.

S&P expects Botswana’s economy to grow only 2.5% in 2026, following contractions of 2.8% in 2024 and 0.4% in 2025. Meanwhile, the fiscal deficit is projected to reach 8.9% of GDP in the 2026/27 financial year, only a slight improvement from 9.3% the previous year.

Beyond diamond dependence, Botswana faces additional structural challenges, including rising public spending pressures, youth unemployment, and the need to expand sectors such as tourism, manufacturing, and financial services.

Without significant economic diversification or a strong rebound in global diamond demand, analysts warn that the country’s growth prospects and fiscal stability could remain under strain for years.