For more than half a century, Botswana’s economy has been closely tied to the fortunes of its diamond industry. The discovery of diamonds in 1967 transformed the country from a sparsely connected rural state, with only a handful of tarred roads at independence, into one of sub-Saharan Africa’s most prosperous nations on a per capita basis. Revenues from the sector enabled successive governments to finance universal healthcare, expand education opportunities, and build extensive infrastructure.
Today, however, Botswana faces a profound challenge as global demand for natural diamonds weakens in the face of rapid growth in the market for lab-grown equivalents. Synthetic gems, produced in laboratories within weeks or months, have gained significant traction among consumers, particularly in the United States, the world’s largest diamond market. According to jewellery insurer BriteCo, nearly half of engagement rings purchased in 2024 in the US contained lab-grown diamonds, a steep rise from just 5% in 2019.
This shift is undermining Botswana’s fiscal stability. Natural diamonds account for around 80% of the country’s exports and one-third of government revenue. With prices falling and output slowing, the International Monetary Fund forecasts Botswana’s fiscal deficit will rise to 11% of gross domestic product in 2025, the largest in sub-Saharan Africa this year. The government’s debt ratio is projected to reach 43% of GDP, more than double the level recorded just two years earlier. The International Monetary Fund has warned of the risks to financial stability if urgent reforms are not undertaken.
The downturn has had visible social and economic consequences. Public hospitals and clinics are reporting shortages of medicines and equipment, with patients experiencing extended waiting times. The Botswana Doctors Union has expressed concern about the strain on healthcare provision. In the construction sector, firms reliant on government contracts have retrenched workers, with the Tshipidi Badiri Builders Association reporting that many of its members have suspended operations altogether.
The government of President Duma Boko, who took office in October 2024, has acknowledged that the reliance on diamonds has reached its limits. In a recent address, he described the situation as “a national social existential threat.” His administration has sought to secure external investment, including a $12 billion pledge from Al Mansour Holdings, a Qatari group, although questions remain about the viability of such commitments given the scale of its promises across multiple African countries.
Botswana has long discussed economic diversification. The establishment of the Botswana Development Corporation in 1970 was aimed at stimulating sectors such as copper mining and beef production, while tourism centred on the Okavango Delta has grown to contribute about 12% of GDP. Yet progress has been limited, and diamonds remain overwhelmingly dominant. Even initiatives to expand renewable energy and agriculture, which President Boko has identified as priorities, face funding constraints due to the current fiscal crisis.
The scale of the disruption is being compared to historic shifts in the diamond trade, such as the discovery of alluvial diamonds on Namibia’s coast in the early 20th century. Mining historian Duncan Money has argued that the present moment may prove even more consequential, given that the rise of synthetic diamonds represents a structural rather than cyclical change in demand.
For Botswana, the implications extend beyond its borders. Like other resource-dependent African economies, such as Nigeria and Angola with oil, the nation faces the challenge of aligning short-term fiscal needs with long-term development planning. Yet the crucial distinction, as economist Charlie Robertson notes, is that diamond prices are unlikely to rebound in the way oil often does, raising questions about the sustainability of Botswana’s economic model.
In the short term, the government has secured loans from the African Development Bank and the OPEC Fund for International Development to address liquidity pressures. Credit rating agencies, including Moody’s and S&P Global Ratings, have revised Botswana’s outlook to negative, reflecting concerns about rising debt and limited policy space.
As Botswana contemplates its future, its predicament underscores a wider African reality: the vulnerability that arises from dependence on single commodities. While the country’s diamond wealth once symbolised stability and prosperity, the rapid rise of lab-grown gems reveals the urgency of rethinking development pathways that can withstand global market disruptions and deliver more inclusive growth.
