'It is by the grace of God that you find a diamond'

The Human Cost of a Diamond Market in Crisis

When I first visited Kono, Sierra Leone, I was struck not by the glittering promise of diamonds but by the stark reality of their absence. The men who work these informal mines, stripped to the waist and laboring under the blazing sun, have little to show for their efforts beyond the occasional small fragment. As Daniel, a foreman at one such mine, told me, 'It is by the grace of God that you find a diamond.' His words, simple yet profound, encapsulate the desperation and hope that define this industry's current moment.

"It is by the grace of God that you find a diamond. We are just dreaming, really. We still have that hope."

The story unfolding in this remote region mirrors a broader narrative—one where the economic viability of natural diamonds has been challenged by technological innovation and changing consumer preferences. The rise of lab-grown diamonds, chemically identical to their mined counterparts but priced at up to 70% less, has fundamentally altered the landscape.

Global Market Disruption

The global retail price of polished natural diamonds has dropped by approximately 40% over just four years. This collapse is largely attributed to the rapid expansion of lab-grown diamond production, primarily in India and China. These artificial gems are manufactured using two main techniques—HPHT (high pressure high temperature) and CVD (chemical vapour deposition)—both of which produce diamonds with the same physical and chemical properties as natural ones.

While this technological breakthrough has made diamonds more accessible to consumers, it has also created a significant challenge for traditional mining operations. In Sierra Leone, the closure of Koidu Holdings, the country's largest diamond mine, illustrates this shift. The mine, which employed 1,000 people, shut down following a bitter labor dispute over wages. However, the weakening global market also played a role in its demise.

Legacy and Loss

Diamond mining has been central to Sierra Leone's identity since the 1930s. But it was also the catalyst for one of the most brutal civil wars in modern history, immortalized in films like Blood Diamonds. The conflict, which lasted from 1991 to 2002, resulted in over 50,000 deaths and displaced hundreds of thousands more. The war was driven by control over the diamond-rich regions, particularly Kono, where Daniel now works.

Augustine Shekho, the governor of Kono, speaks candidly about how the fall in diamond prices has devastated the local economy. "Lower diamond values have reduced earnings for miners, constrained investment, and weakened local economic activity," he notes. The ripple effects are evident across communities that once thrived on diamond revenues.

De Beers' Response

De Beers, a major player in the natural diamond industry, has responded with initiatives like Gemfair, which aims to provide artisanal miners with equipment, training, and transparent pricing. The program represents an attempt to modernize traditional practices and offer a fairer trade model for those who continue to work in the informal sector.

However, the real challenge lies in changing consumer perception. As David Johnson from De Beers explains, "With people increasingly wanting to know where their coffee, cotton or chocolate has come from, it's not surprising that people also want to know where their diamond— one of the most emotionally significant purchases—has come from." This demand for traceability and ethical sourcing is a key factor in how natural diamonds compete with lab-grown alternatives.

The Lab-Grown Alternative

Advocates of lab-grown diamonds argue that these products are more ethical and environmentally sustainable than mined gems. Rohit Mehta, CEO of Forlink Ventures in India's diamond capital Surat, emphasizes this point: "People are more conscious about climate change, about extracting too much from the earth." Yet critics counter that the process is energy-intensive, requiring vast amounts of electricity to produce a single rough carat.

Stanley Mathuram, an environmental consultant based in the US, notes that lab-grown diamond reactors operate at temperatures akin to those found in data centers. "These reactors run at the temperature of the sun," he says, highlighting the substantial energy consumption involved in the manufacturing process. Despite this, global demand for lab-grown diamonds continues to grow, reaching $29.5 billion in 2025 and projected to hit $91.9 billion by 2034.

Consumer Shifts

In the United States, engagement rings featuring lab-grown stones now account for 61% of all sales, according to a recent study by The Knot. This trend reflects economic pragmatism and evolving values, with 40% of couples stating it is specifically important that their stone be lab grown.

Doug Meadows, co-founder of David Douglas Diamonds in Atlanta, Georgia, offers a pragmatic perspective on this shift. "It's all about the stone. They're going for the biggest bling that they can afford," he says. With gold prices soaring, the mounting of a ring has become more expensive than the diamond itself, making lab-grown stones an attractive option.

Hope Amid Adversity

Back at the mine in Kono, Daniel continues to sift through gravel with his fingers, searching for anything that might shimmer. "Unfortunately there is no diamond here," he says, looking into the blue-grey mud of the pit. "I will try my luck again," he adds as he resumes digging.

The resilience of these miners is evident in their continued efforts despite mounting economic pressure. Yet the broader implications for their livelihoods remain uncertain. As the market continues to evolve, the challenge for both natural and lab-grown diamond industries lies in balancing profitability with ethical responsibility and consumer satisfaction.