Natural diamond mining in Sierra Leone faces growing challenges
In Sierra Leone’s Kono region, informal diamond miners continue to search for natural gems despite declining prices and the closure of the country’s largest diamond mine. The rise of lab-grown diamonds, which are chemically identical but significantly cheaper, has contributed to a steep drop in the value of mined diamonds, putting economic pressure on traditional mining communities.
Why this matters
Diamond mining has long been a critical source of income and identity in Sierra Leone, especially in Kono, a region historically known for its diamond wealth. The shift in the global diamond market toward lab-grown stones threatens the livelihoods of artisanal miners and the local economy. Understanding these changes is essential for assessing the future of mining communities and the diamond industry worldwide.
Key developments in Sierra Leone’s diamond sector
- The closure of Koidu Holdings, Sierra Leone’s largest diamond mine, resulted in the loss of 1,000 jobs. The company cited industrial disputes and security concerns, but market weakness also played a role.
- Informal mining has increased as displaced workers and others continue to search for diamonds by hand in difficult conditions.
- Prices for polished natural diamonds have fallen approximately 40% over the past four years, largely due to competition from lab-grown diamonds.
The rise of lab-grown diamonds
Lab-grown diamonds are produced in factories using high pressure high temperature (HPHT) or chemical vapor deposition (CVD) technologies, mainly in India and China. These diamonds are physically and chemically identical to natural ones but cost up to 70% less. The global market for lab-grown diamonds was valued at $29.5 billion last year and is expected to triple by 2034.
In the United States, lab-grown diamonds now account for 61% of engagement ring sales, reflecting changing consumer preferences driven by cost and ethical considerations.
Economic and social impact on Kono
Kono’s governor, Augustine Shekho, explains that the drop in diamond prices has reduced miners’ earnings, limited investment, and weakened local economic activity. Diamond mining has been central to the region since the 1930s and was a focal point during Sierra Leone’s civil war, which caused widespread suffering and displacement.
Many in the community feel the diamonds have not brought prosperity. A local teacher, Abubakar Amara, expressed disappointment that despite the region’s diamond wealth, poverty remains widespread.
Efforts to support artisanal miners
De Beers, a major diamond company, has launched Gemfair in Sierra Leone to provide artisanal miners with equipment, training, and fairer pricing. This initiative aims to connect miners to markets and improve transparency, while also enhancing the reputation of natural diamonds by offering traceability.
David Johnson of De Beers notes growing consumer interest in knowing the origin of their diamonds, similar to trends in other products like coffee and chocolate.
Environmental and ethical debates
Proponents of lab-grown diamonds argue they are more ethical and environmentally friendly, as they avoid mining’s social and ecological impacts. However, critics highlight that producing lab-grown diamonds is energy-intensive, requiring large amounts of electricity comparable to data centers.
Outlook for natural diamond mining
Despite efforts to promote natural diamonds, retailers face challenges educating consumers about their value amid the growing popularity of lab-grown alternatives. Some jewelers note that buyers prioritize size and affordability, often choosing larger lab-grown stones over smaller natural ones.
Meanwhile, miners like Daniel in Kono continue their difficult search, relying on hope and perseverance despite slim chances of finding diamonds.
Recommended reading
For more context, see related Peack News coverage and explainers linked below.
