Lab-Grown Diamonds Shake Global Market As Sierra Leone Miners Struggle

The growing popularity of lab-grown diamonds is disrupting the global diamond industry, causing a sharp decline in the value of natural diamonds and threatening livelihoods in mining communities.

In Sierra Leone’s diamond-rich Kono region, miners continue digging despite dwindling returns. Many now spend months searching for diamonds without success as global prices for mined diamonds have fallen by about 40% over the past four years.

The downturn contributed to the closure of the country’s largest diamond mine, Koidu Holdings, last year, resulting in the loss of around 1,000 jobs. While company officials cited industrial disputes and security concerns, industry insiders say weak global demand also played a major role.

Lab-grown diamonds, produced mainly in India and China, are chemically identical to natural diamonds but can cost up to 70% less. Their affordability has made them increasingly popular among consumers, especially in the United States, where they now account for more than 60% of engagement ring sales.

Local officials in Kono say the falling value of natural diamonds has weakened economic activity and reduced earnings for miners. Many residents argue that despite decades of diamond extraction, their communities remain poor.

To improve the industry’s image, diamond giant De Beers has launched initiatives aimed at supporting small-scale miners through training, equipment, and improved market access.

Supporters of lab-grown diamonds argue they are more affordable and ethical, while critics point to the large amounts of energy required to produce them.

Industry analysts predict the global lab-grown diamond market will continue expanding rapidly over the next decade, putting further pressure on traditional diamond mining regions such as Sierra Leone.

For miners like Daniel, however, hope remains alive. Despite the challenges, he continues searching for the precious stones, believing that one successful discovery could change his fortunes.