Diamonds Under Duress: Geopolitics and Strategy Reshape Gem Trade

LAS VEGAS, NV – April 13, 2026

The global diamond industry navigated a precarious March, caught between the crosscurrents of geopolitical turmoil and significant internal restructuring. A market already grappling with a deep divide between the value of large and small stones was dealt a fresh blow by the Middle East war, which froze trading in key hubs and sent ripples of uncertainty through an already cautious supply chain. The month’s events, punctuated by price drops in smaller goods and major strategic shifts from industry titans like De Beers and Signet Jewelers, have underscored the sector's vulnerability and accelerated its transformation.

Geopolitical Tremors Disrupt Global Trade

The immediate impact of the conflict, which began on February 28, was felt most acutely in the diamond centers of Israel and Dubai. Trading activity ground to a halt following Iranian missile strikes, forcing rough tender houses to hastily relocate sales and disrupting the flow of goods. These cities are not merely markets but critical crossroads for the global diamond trade, and their paralysis has created significant bottlenecks. For India's massive cutting and polishing industry, the situation is particularly dire, with manufacturers facing concerns over their access to the rough diamonds that are the lifeblood of their business. The trade figures are telling: in the past fiscal year, India’s trade with Dubai alone topped $18 billion, highlighting the immense financial stakes of the disruption.

Beyond the immediate operational chaos, the conflict has unleashed broader economic pressures. Oil prices surged past $100 a barrel in March, driving up costs for mining, manufacturing, and transport across the entire diamond pipeline. This inflation puts a dual squeeze on the industry, increasing operational expenses while simultaneously eroding the discretionary spending power of consumers in key markets. Compounding this, geopolitical shocks have strengthened the U.S. dollar, the currency in which diamonds are priced globally. For buyers using other currencies, this effectively makes diamonds more expensive, further dampening demand for polished stones. The lingering friction from U.S. tariffs on Indian goods, though reduced, adds another layer of complexity and cost, forcing dealers to navigate a landscape fraught with economic and political risk.

A Widening Chasm in Diamond Pricing

Nowhere is the market’s anxiety more visible than in its pricing structure. March saw a continuation of the downward pressure on smaller diamonds that has plagued the industry for nearly two years. The RapNet Diamond Index (RAPI™) for 1-carat diamonds fell 1.7%, while the indexes for 0.30-carat and 0.50-carat stones saw declines of 1.1% and 3.5%, respectively. On March 20, the Rapaport Price List was officially adjusted downward for round diamonds up to 1.99 carats and some pear shapes, a move that, while cushioned by a calming public message from CEO Dan Mano, confirmed the weakness in this segment.

This slump is not a new phenomenon. It is the result of a multidimensional crisis that began in mid-2022, fueled by an oversupply in the market, a sluggish post-pandemic recovery in China, and intense competition from the burgeoning lab-grown diamond sector. Wholesale polished diamond prices fell by approximately 20% in 2023, with smaller stones bearing the brunt of the decline.

In stark contrast, the market for large, high-quality diamonds remains robust. Polished diamonds of 2 carats and larger, particularly in elongated fancy shapes, are in high demand and short supply. Large wholesalers in New York reported steady orders from retailers for these premium goods, illustrating a market that is fundamentally split. While smaller, more common stones are increasingly commoditized and vulnerable to economic headwinds, the finest and largest gems continue to be sought after as rare assets and luxury statements.

Industry Giants Remake the Playing Field

In response to this turbulent environment, the industry's largest players are making bold, strategic moves to consolidate their positions and secure their futures. De Beers, the world's most famous diamond producer, is undertaking one of its most significant restructurings in recent history. The company announced it will cut 20 to 25 companies from its exclusive list of "sightholders"—the authorized bulk buyers of its rough diamonds. This will shrink its client list to between 45 and 50 companies for the new contract period beginning July 1.

While driven partly by a push for greater efficiency, the decision is primarily a reflection of a stark new reality: De Beers will have fewer diamonds to sell. A new agreement with the government of Botswana will see the state-owned Okavango Diamond Company progressively increase its share of Debswana's production to 50% over the next decade. This drastically reduces the volume of rough diamonds De Beers can allocate to its sightholders. In response, the company is consolidating supply around clients who demonstrated purchasing loyalty even during the recent market downturn, effectively rewarding its strongest partners while signaling a new era of tighter, more controlled distribution.

On the retail front, Signet Jewelers, a powerhouse in the U.S. market, is also realigning its strategy. The company is absorbing its James Allen e-commerce brand into its other major online platform, Blue Nile. Crucially, the revamped Blue Nile will now focus predominantly on natural diamonds. This move is a clear strategic pivot designed to create distance from the lab-grown diamond market. While lab-grown stones are rapidly gaining market share, their prices are in freefall, raising questions about their long-term profitability in the bridal sector. By positioning Blue Nile as a premier destination for natural diamonds, Signet is betting on a strategy of differentiation, marketing natural stones as unique, finite luxury items with enduring value—a clear contrast to their man-made counterparts.

Navigating an Uncertain Future

The road ahead for the diamond industry remains complex. Experts predict continued contraction, particularly as the lab-grown sector continues its ascent. Lab-grown diamonds, which now account for about half of the U.S. engagement ring market by volume, are expected to see prices fall further, likely shifting their primary role from bridal jewelry to more accessible fashion categories. In response, natural diamond producers are expected to deliberately tighten supply to support prices and prevent further market erosion.

Despite the challenges, the long-term outlook for natural diamonds is not without its supporters. Primary supply is structurally constrained, with few major new mines on the horizon to replace aging ones. This natural scarcity could support values as global wealth and disposable income rise. Some, like industry veteran Martin Rapaport, see a potential boom on the horizon, fueled by a massive transfer of wealth to younger generations in the U.S. who may develop a strong appetite for the highest-quality, rarest diamonds.

For now, the industry is focused on survival and adaptation. It is working to clearly define the two diamond categories in the consumer's mind: lab-grown for fashion and value, and natural for rarity, legacy, and luxury. The success of this effort, combined with the trajectory of the global economy and the stability of its key trading hubs, will determine the brilliance of the diamond market's future.