The natural diamond market is undergoing a profound structural redefinition that simultaneously impacts pricing, value perception, and the product’s symbolic function. This is not merely a cyclical downturn destined to self-correct.
Data released by the Antwerp diamond hub and the Antwerp World Diamond Centre (AWDC) reveal a severe contraction in global trade: Antwerp’s trade value plummeted from approximately $41 billion in 2022 to an estimated $19.1 billion in 2025. In just three years, the market has suffered a decline of over 50%. Concurrently, the value of global natural diamond production has dropped from approximately $15.97 billion in 2022 to $8.5 billion in 2025, marking a 47% reduction in the average value per carat.
This trend is corroborated by the most reliable indicator of actual price dynamics: Rapaport’s RapNet Diamond Index (RAPI). The price index for 1-carat natural diamonds has recorded steady declines: -10.7% in 2022, -10.9% in the first seven months of 2023, -23% in 2024, and -9.9% in 2025. From the post-pandemic peak to the beginning of 2026, the cumulative nominal contraction reached 44.9%. Factoring in a cumulative U.S. inflation rate of 11.1% between 2022 and 2026, the real loss exceeds 50%. Today, in terms of purchasing power, a 1-carat natural diamond is worth less than half of what it was during its recent recent peak years. This sheer structural erosion of value demonstrates that, unlike gold — which has nearly doubled over the same period — diamonds have failed to retain their value and, in all likelihood, were never a true investment asset.
The roots of this crisis are deeply intertwined with the “myth” of the diamond, carefully constructed over the course of the 20th century by the De Beers corporation. Through its Central Selling Organisation, the company held a near-monopoly on production and distribution, allowing it to stockpile stones to prevent oversupply and thereby sustain price equilibrium. However, it was in 1947 that the N.W. Ayer & Son agency created what would become the cultural symbol of eternal love on behalf of De Beers: the slogan, “A Diamond is Forever”.
This campaign, hailed by Advertising Age magazine as the greatest of the 20th century, made the diamond a prerequisite for engagement rings. While almost no one bought diamonds for engagements prior to 1938, their presence in U.S. engagement rings surged from roughly 10% in the 1940s to over 80% by the 1990s.
The system held up until the end of the monopoly in the 1990s. The opening of new mines in Russia, Canada, and Australia, the demand for greater transparency, the spread of ethical and green ideologies, and, finally, the advent of synthetic diamonds weakened a market that had begun to fluctuate like that of any other commodity.
Herein lies the great paradox created by De Beers’ own success: the campaign deeply entrenched the cultural branding of the diamond as an essential symbol of love, vanity, and social status, but it failed to inextricably link this symbol to the mined origin of the stone. For decades, the lack of alternatives masked this vulnerability. Today, however, thanks to HPHT and CVD technologies, synthetic diamonds offer the exact same chemical structure and optical behavior.
De Beers failed in its attempt to control the gemological market for synthetics — recently going so far as to shutter its dedicated subsidiary— and the universal demand it had generated can now be met by the laboratory product, which can be sold at the exact same price point for significantly larger stones.
Many economists compare this revolution to what happened between natural and cultured pearls, or between analog and digital photography: when technology succeeds in replicating a rare commodity, the market changes forever. The desire for the cultural brand created by De Beers survives, but the scarcity that sustained its pricing is being eroded, driving a profound democratization of the product.
Data collected by JCK magazine in February 2026 confirms this shift: in the United States, synthetic diamonds now account for approximately 61% of engagement ring purchases and 66% in terms of total carat weight, precisely because consumers are opting for “lab-grown” stones that are bought, on average, in larger sizes compared than their natural counterparts.
My Outlook on the Industry’s Future
In light of this objective data, I believe it is essential to share some personal reflections on the near-term scenarios for the diamond trade.
For decades, the public was led to believe that diamonds would appreciate in value over time. Today, confronted with market data, consumers who bought into this narrative feel defrauded, inexorably shifting consumer sentiment toward synthetics. In my view, natural diamonds will continue to lose ground in the mid-market segment. When a couple compares stone size, brilliance, and price, lab-grown diamonds possess an insurmountable advantage. For this reason — particularly in the United States and for engagement ring center stones of 50 points or larger — the market share for natural diamonds is destined to decline.
The crucial point is that today, synthetics are no longer perceived as cheap substitutes. Rather, they are fully legitimate alternatives from a visual, gemological, and commercial standpoint, capable of fulfilling the exact same symbolic function at a drastically lower cost.
The true problem for natural diamonds is not their beauty, but their price. Their desirability remains intact, but they suffer from a glaring contradiction: they are prestigious, yet their pricing no longer seems justifiable in the eyes of a consumer who knows a far more affordable alternative exists. This is the core strategic dilemma: the diamond “brand” still works exceptionally well, but it is no longer exclusively synonymous with the natural, mined diamond.
I do not believe, however, that synthetics will destroy the entire market. Rather, I foresee a stable bifurcation of the industry. I envision a “Tier 1” dominated by lab-grown diamonds: a rational purchase geared toward mid-priced engagement rings and commercial jewelry over 30 to 50 points, appealing to those seeking larger stones on a tighter budget. Conversely, I see a “Tier 2” dedicated to natural diamonds: authentic luxury, rarity, collecting, high jewelry, and high emotional investment. In short, synthetics will not eliminate natural diamonds, but they will hollow out the middle market. This will force natural diamonds into a selective contraction within a narrower, more elite market, characterized by lower volumes but higher margins — shifting away from automatic ubiquity toward a conscious, distinguishing choice.
To survive, the natural diamond sector can no longer rely on cultural inertia. For decades, simply saying “diamond” was enough; today, natural diamonds must justify their cost by becoming a truly “differentiated” asset. The industry must articulate its rarity, its geological history, and its symbolic irreplaceability, abandoning the logic of an aspirational mass-market product to align itself with selective luxury. It must emphasize the essential difference between a gem forged by nature over geological epochs and one born of technology. Otherwise, it risks appearing as merely an unnecessarily expensive version of the exact same object, and synthetics will continue to erode its market share. It must be perceived not just as “a diamond among diamonds”, but as an entirely different conceptual category in the consumer’s mind.
We must also ask ourselves what today’s teenagers will think of natural diamonds in twenty years, having grown up without the legacy propaganda of “A Diamond Is Forever”. I am already noticing a widespread disaffection: contemporary status symbols are cutting-edge technological products, driven by multinational corporations that are far more influential and globalized than the De Beers of old.
My outlook, therefore, unfolds across three distinct phases:
- Short Term: I foresee continued heavy pressure on the natural diamond segment.
- Medium Term: We will witness a severe industry shakeout, characterized by lower volumes and greater market concentration.
- Long Term: The natural market will endure, but it will transform into an elite niche, akin to fine watchmaking or rare gemstone collecting.
It is not destined to fade away; rather, it will become less universal and far more specialized.
As Harry Oppenheimer famously noted, diamonds are bought out of vanity. They do not belong to the realm of safe-haven assets, but rather to that of desire and social representation. Their value lies not merely in the physical material, but in the meaning humanity chooses to project onto them. The true challenge today, therefore, is not proving that a natural diamond is more beautiful, but ensuring it is still perceived as the most meaningful. The problem for the natural diamond is not that the dream has been lost, but that it has lost its monopoly on that dream. The sector must accept this transformation and redefine exactly why it deserves to maintain an autonomous position within the value market.
The jewelry market is shifting, and the lab-grown diamond is one of the clearest indicators of this change. If jewelry professionals fail to recognize this transformation and adapt accordingly, they are destined to lose ground. After all, both nature and history teach us that survival always belongs to those who know how to evolve.
