Botswana’s Diamond Dilemma: The Impact of Lab-Grown Diamonds and De Beers’ Sale on the SADC Region

    

 

Since its inception in 1888, De Beers has maintained a stronghold on the international diamond market through a cartel-like system that controlled supply and kept prices elevated. The longstanding collaboration between De Beers and the Botswana government, through their equally owned venture Debswana, has been a benchmark for resource management and fair distribution of benefits in Africa (Wyk, 2010). However, Anglo American's 2024 announcement to withdraw from De Beers signifies a pivotal change. Experts believe that Anglo's move was influenced by decreasing profit margins and increasing competition from synthetic diamond producers, whose market share expanded from 1% in 2015 to over 15% by 2023 (Shah, 2025; Bain & Company, 2023). This shift prompts concerns about the viability of Botswana's diamond-driven economic model, especially since De Beers has traditionally overseen not just mining but also the marketing, branding, and integration of Botswana's diamonds into the value chain.

Regional Dependence and SADC-Wide Implications

Beyond Botswana, several economies within the Southern African Development Community (SADC) are heavily reliant on diamond exports. Namibia's Namdeb (another De Beers joint venture), Angola's Catoca mine, and Lesotho's Letšeng mine all depend on the global demand for diamonds. The rise of lab-grown diamonds poses a threat to these revenue sources and, consequently, to the fiscal stability of resource-dependent nations. According to the African Development Bank (2023), mineral rents constitute over 40% of government revenues in Angola and Namibia. The drop in natural diamond prices also undermines the SADC's broader mineral export base and the regional fiscal resources available for integration projects under the SADC Industrialization Strategy and Roadmap (2015–2063). This situation could jeopardize collective infrastructure and energy projects like the Southern African Power Pool (SAPP) and the North–South Corridor, which partially rely on mineral export income.

Socioeconomic and Governance Implications in Botswana

The financial strain from declining diamond revenues poses a direct threat to Botswana's welfare model, which has historically supported universal education, healthcare, and public employment programs (Harvey, 2015; Makoni, 2015). With youth unemployment already exceeding 25%, the situation is expected to worsen as Debswana reduces production and lays off workers. This socioeconomic pressure could challenge Botswana's long-standing political stability and social contract, especially if economic diversification remains slow. Additionally, elite capture and rent-seeking behaviour may become more pronounced as competition for dwindling diamond rents intensifies (Barczikay et al., 2020). Scholars like Acemoglu, Johnson, and Robinson (2003) caution that resource-dependent economies often suffer from "political Dutch disease," where resource rents diminish incentives for institutional innovation and private-sector growth.

 

Economic Implications for Botswana and the SADC

Diamonds have long been the mainstay of Botswana's economy, accounting for between 80 and 90 percent of total export earnings and about one-third of GDP (Muth, 2021; Barczikay et al., 2020; Makoni, 2015; Besada & O'Bright, 2019). In the past, this exceptional concentration has given the nation foreign exchange reserves and economic stability, but it has also solidified structural reliance on a single product. The vulnerability of this development paradigm is being revealed by the decline in the market for diamonds worldwide, which is being caused by the emergence of lab-grown substitutes and changing customer preferences.

 

Table: Key Impacts of Diamond Market Disruption on Botswana

Impact Area	Description
GDP & Exports	Diamonds = 1/3 of GPD, 80-90% of exports
Fiscal Health	Falling revenues threaten public spending, including healthcare
Diversification	Limited Progress; other minerals insufficient to replace diamond revenues
Regional Effects	SADC economies with similar dependencies face parallel risks

 

The Technological Disruption Dimension

Lab-grown diamonds (LGDs) are created using Chemical Vapor Deposition (CVD) and High-Pressure High-Temperature (HPHT) techniques that mimic natural conditions but at a significantly reduced cost. By 2025, it is anticipated that LGDs will be 80–90% cheaper than mined diamonds, while still possessing the same chemical makeup and clarity (Shah, 2025).

 

This technological advancement aligns with evolving consumer ethics. According to surveys by the Natural Diamond Council (2023), 60% of Gen Z consumers favour stones that are ethically sourced or sustainable. Lab-grown diamond producers have capitalized on these preferences, promoting LGDs as environmentally friendly alternatives to natural diamonds associated with conflict.

As a result, the longstanding belief that African diamonds are "forever" is being supplanted by the notion that "lab-grown diamonds are future-proof." This shift in ideology challenges the cultural and symbolic value that De Beers has relied on to maintain its monopoly for over a century.

 

Policy Responses and Strategic Options for Botswana and SADC

To counteract the financial impact, Botswana needs to hasten its diversification into knowledge-based and service-oriented sectors, such as finance, logistics, and renewable energy. Researchers like Besada and O’Bright (2019) suggest using diamond revenues to support industrialization, entrepreneurship, and regional value chains in manufacturing and tourism.

 

On a regional level, SADC could implement a coordinated strategy to address mineral market fluctuations through a Regional Extractive Stabilization Fund or joint beneficiation policies under the SADC Mining Protocol. These measures could help smaller economies like Lesotho and Namibia withstand commodity price shocks and encourage shared value addition.

 

Ultimately, Botswana’s future competitiveness might hinge on embracing technological innovation, potentially by entering the lab-grown diamond market itself. The country's reputation for ethical governance and clean energy could establish it as a credible producer of "green" synthetic diamonds, aligning with global ESG trends.

 

The decline of De Beers’ dominance and the rise of lab-grown diamonds represent a significant shift in global extractive economies. For Botswana and the SADC, the diamond era is nearing a turning point. Maintaining prosperity will necessitate rethinking resource dependency, investing in human capital, and enhancing regional cooperation. As technological disruption dismantles traditional hierarchies of mineral wealth, those economies that adapt - through innovation, diversification, and regional collaboration - will shape Southern Africa’s post-diamond future.