De Beers has reportedly built up its largest stockpile of diamonds since the 2008 financial crisis, with an inventory valued now at roughly $2 billion, according the Financial Times.

�It�s been a bad year for rough diamond sales,� De Beers chief executive Al Cook told the FT, though he did not provide additional details on its inventory.

The diamond giant has faced multiple headwinds in recent years. A slumping Chinese economy, in particular, has been a major drag on demand. Cheaper lab-grown diamonds are also adding pressure.

In a briefing to Bloomberg last year, Cook said his company has been building its stock on the assumption that diamond prices will recover, and that it will be able to sell that supply.

At the end of 2024, that hasn�t materialized. For the first half of this year, De Beers� sales were down about 20% compared to the same time a year ago.

Still, Cook remains upbeat about a turnaround. �As we go independent, we have the freedom to focus on marketing as hard as we focused on mining,� he told the FT.

�This feels to me like the right time to be driving marketing and getting behind our brands and retail, even as we cut the capital and the spend on the mining side.�

However, a new report from McKinsey gave a less optimistic outlook for diamond miners, suggesting that lab-grown alternatives could one day take over the market.

Earlier this year, De Beers� parent company Anglo American announced plans to spin off the diamond business either through a sale or an initial public offering.

Courtesy: mining.com