Diamond Prices Hit Two-Decade Low as Lab-Grown Stones Reshape the Market

Diamond prices have fallen to their lowest levels this century, marking a prolonged decline that has sharply contrasted with the performance of gold and Bitcoin over the same period.

Coin Bureau highlighted the shift in a post on X, citing a roughly 68% collapse in diamond prices since the diamond market peaked in 2011. Over the same period, gold has more than doubled to above $5,000, while Bitcoin has risen from single-digit prices to above $100,000.

Recent industry data supports the broader picture of sustained pressure on diamond prices. The IDEX Diamond Index, a benchmark for wholesale diamond pricing, has fallen nearly 71% from its 2011 peak, according to an August 2026 analysis.

The decline reflects a structural change in the diamond market rather than a single market event. Increased availability of lab-grown stones, excess supply and weaker demand have combined to put pressure on prices for natural diamonds.

Lab-Grown Diamonds Accelerate Price Pressure

The expansion of lab-grown diamonds has changed the economics of the industry by providing consumers with an alternative to mined stones at substantially lower prices.

De Beers reported in June that wholesale prices for synthetic lab-grown diamonds had fallen 93% since 2020, with average wholesale prices around $100 per carat. The company also pointed to increasing competition and greater consumer ability to compare prices as factors affecting the retail market.

The pressure has continued into 2026. Industry analyst Edahn Golan's second-quarter data showed wholesale lab-grown diamond prices falling an average of 13% year over year, although the pace of decline has moderated from earlier periods.

For natural diamonds, the impact is particularly significant in parts of the markets where consumers can readily compare mined and laboratory-created stones. Lab-grown diamonds are chemically identical to natural diamonds, while their substantially lower prices have altered purchasing decisions and reduced the scarcity premium historically associated with mined stones.

Gold and Bitcoin Offer a Different Price Trajectory

Coin Bureau's comparison also places the diamond decline alongside two assets that have experienced very different price trajectories since 2011.

Gold has more than doubled and moved above $5,000, according to the figures cited by Coin Bureau. Bitcoin, which was still trading at single-digit prices during its early years, has since moved above $100,000.

The comparison does not establish that gold or Bitcoin caused the decline in diamonds. Rather, it illustrates how different assets associated with value preservation or scarcity have performed across the same broad period.

The diamond market's difficulties have also affected producers and retailers. Recent industry reporting has identified oversupply, weakening demand and the rapid expansion of laboratory-grown production as key forces behind the prolonged decline in prices.

For the diamond industry, the immediate challenge remains adapting to a market in which laboratory-grown alternatives continue to reshape pricing and consumer expectations. Current industry data shows that the adjustment is still underway.

Writer: Victoria Hale
Technology & Blockchain Writer

Victoria Hale writes about blockchain technology, digital infrastructure, and the intersection of emerging technologies with finance. Her articles explore how new protocols and systems are shaping the evolving digital economy.

She prioritises clarity and accuracy when explaining technical developments to a general audience.