Global market size and structure
The global diamond jewellery market encompasses all retail sales of jewellery containing diamonds, from engagement rings to fashion pieces, across all price points. It is measured at retail consumer price, which is substantially higher than the value at the upstream levels of the supply chain (rough production, polished trading) due to the manufacturing, distribution, and retail margins described in the trade section.
The market peaked at approximately $100 billion in retail value in 2022, driven by the post-pandemic luxury spending surge that characterised 2021 and 2022 globally. By 2023, the market had corrected to approximately $80 to $85 billion as consumer spending normalised and the Chinese market remained below its pre-pandemic levels. The Bain and Company Global Diamond Industry Report, published annually, is the most complete publicly available source for global diamond market data. Source: Bain and Company Global Diamond Industry Report 2023 (bain.com).
The upstream portion of the market, which is what the trade focuses on, is smaller. Rough diamond mining production was approximately $14 to $16 billion in value in 2022–2023. Global polished diamond exports were approximately $18 to $22 billion. The difference between polished export value and retail consumer value reflects the manufacturing, distribution, jewellery fabrication, retail overhead, and margin layers described in the supply chain and trade sections of this guide.
Approximate global diamond jewellery consumer market shares by value, 2023. The United States dominates at approximately 50 percent. China, India, and the Gulf region are the other significant markets. Source: Bain and Company Global Diamond Industry Report 2023.
The United States: the market that sets the standard
The United States has been the world's largest diamond consumer market since the mid-twentieth century, when De Beers' "A Diamond is Forever" campaign transformed the engagement ring from a luxury item for the wealthy into a near-universal expectation for middle-class marriage. The campaign, launched in 1947 by the N.W. Ayer advertising agency on behalf of De Beers, is consistently cited as one of the most effective advertising campaigns of the twentieth century. Source: Epstein, E.J. (1982). "Have You Ever Tried to Sell a Diamond?" The Atlantic.
US consumer demand for diamond jewellery is approximately $40 to $45 billion at retail annually, representing roughly 50 percent of global diamond jewellery consumption. The engagement ring drives a disproportionate share of this: approximately 75 to 80 percent of first-time engagements in the US involve a diamond ring, and the average engagement ring spend has been approximately $5,500 to $6,000 in recent years according to The Knot annual survey data.
The lab-grown disruption has been most acute in the US market. Lab-grown diamonds grew from approximately 2 to 3 percent of US engagement ring volume in 2019 to approximately 17 to 20 percent by 2023, according to Tenoris market research data cited in industry publications. The growth was driven primarily by price: a lab-grown diamond of the same grade as a natural sells for 70 to 85 percent less, and for younger US consumers under cost pressure from housing and student debt, the price differential has been decisive for a segment of the market.
The natural diamond industry's response in the US has been a repositioning of natural diamonds as rare, meaningful, and irreplaceable by comparison with manufactured substitutes. De Beers' "Natural is Real" campaign and the Natural Diamond Council's "For Moments Like No Other" marketing represent this positioning shift. Source: Natural Diamond Council (naturaldiamonds.com).
China: the growth story that slowed
China's diamond market grew rapidly from the 1990s through approximately 2015, as rising middle-class income and the adoption of Western engagement ring customs created demand for diamonds that had not existed in the country a generation earlier. China became the world's second-largest consumer diamond market, accounting for approximately 15 to 17 percent of global demand at the peak.
Since approximately 2015, and more markedly since 2020, China's diamond demand has softened. A combination of factors has contributed: slowing economic growth reducing consumer confidence, a government anti-corruption campaign that dampened conspicuous luxury consumption, demographic shifts reducing the number of marriages per year, and the rise of alternative luxury spending categories including travel, experiences, and domestic luxury brands. The post-COVID recovery in Chinese consumer spending was slower in diamond jewellery than in other luxury categories.
By 2023, China's share of global diamond demand had declined to approximately 12 to 14 percent, and the market remained below its pre-pandemic levels. Bain's 2023 Global Diamond Industry Report noted Chinese demand recovery as one of the key uncertainties for the near-term natural diamond market outlook. China's eventual trajectory remains the most significant single variable in global diamond demand forecasting.
Chinese consumer preferences have also shifted. Younger Chinese consumers show stronger preference for branded jewellery (Cartier, Tiffany, Bulgari) over unbranded diamond solitaires, and a growing interest in coloured gemstones as alternatives to white diamonds for engagement and gifting. The Chinese market's recovery, if it materialises, may look different in composition from its pre-pandemic structure.
India: volume growth with structural complexity
India is simultaneously the world's largest diamond processing centre and its third-largest consumer market, a combination unique in the diamond supply chain. Indian consumers bought approximately $8 to $10 billion of diamond jewellery annually in recent years, representing approximately 8 to 10 percent of global consumption.
India's diamond consumer market has grown consistently for two decades, driven by rising household incomes, urbanisation, and the aspirational consumption patterns of India's expanding middle class. The wedding jewellery market is the primary driver: diamond engagement rings and wedding jewellery have become established as markers of aspiration in urban India, particularly in the 25 to 40 age demographic in Tier 1 and Tier 2 cities.
India's market has specific structural characteristics that differ from Western markets. Wedding jewellery remains event-driven and culturally significant in ways that go beyond fashion consumption. Gold jewellery retains strong cultural relevance alongside diamonds, and many Indian buyers choose diamond-and-gold combinations rather than the diamond-on-platinum or diamond-on-white-gold combinations that dominate Western markets. The self-purchase segment for women, buying diamond jewellery outside the gifting or wedding context, has grown sharply since approximately 2015.
The entry of organised retail (Tanishq from the Tata group, Malabar Gold, Kalyan Jewellers, CaratLane) into the diamond jewellery market has transformed the consumer experience in India. These brands have brought certification transparency, standardised return policies, and national advertising reach that the unorganised jewellery sector could not offer. The organised sector's share of diamond jewellery retail in India has grown from approximately 20 percent in 2010 to approximately 35 to 40 percent in 2023.
Other significant markets
The Gulf Cooperation Council (GCC) countries, particularly UAE, Saudi Arabia, and Qatar, collectively represent approximately 7 to 9 percent of global diamond demand. Dubai's position as a luxury retail and tourism hub amplifies its importance beyond its resident population: a significant portion of diamond jewellery sold in Dubai's malls and souks is purchased by visitors from South Asia, China, Russia, and Africa. The GCC market is particularly strong in high-value coloured diamond jewellery and branded luxury pieces.
Japan was historically the world's second-largest diamond market through the 1980s and 1990s, when De Beers successfully introduced the engagement diamond tradition to Japanese consumers. Economic stagnation through the 1990s and 2000s, combined with demographic decline (falling marriage rates), reduced Japan's share of global demand. Japan currently accounts for approximately 4 to 6 percent of global consumer diamond demand, a fraction of its historical peak share.
Europe collectively represents approximately 8 to 10 percent of global diamond demand, with the UK, Germany, France, and Italy as the principal markets. European consumer preferences tend toward branded jewellery and classic designs, with strong demand for Cartier, Van Cleef, and Bulgari branded pieces relative to unbranded solitaires.
The lab-grown disruption: how dramatic and how permanent
The growth of the lab-grown diamond market from approximately 2018 to 2024 represents the most significant structural change to the diamond industry since De Beers' rough market monopoly broke down in the 1990s. Understanding the disruption accurately requires distinguishing between volume and value effects.
By unit volume, lab-grown diamonds have taken a meaningful share of the polished diamond market, particularly in the US engagement ring segment. By retail value, the disruption is smaller because lab-grown diamonds sell at dramatically lower prices than natural: more units at lower prices means the value share gain is much smaller than the volume share gain.
The price collapse in lab-grown diamonds since 2020, driven by Chinese CVD production scaling, has been severe: retail prices for mainstream lab-grown grades fell approximately 70 to 80 percent from 2020 to 2024. This collapse has paradoxically complicated the lab-grown value proposition: early adopters who bought lab-grown in 2020 or 2021 at higher prices now hold stones whose replacement cost is a fraction of what they paid. The "value" argument for lab-grown has weakened as prices continue to fall.
The natural diamond industry's strategic response has centred on differentiation: emphasising geological rarity, multi-billion-year formation, and the meaningfulness of natural origin. This strategy targets the segment of consumers for whom the story of the stone matters, not just its appearance and price. Whether this differentiation strategy is sufficient to defend natural diamond pricing in the medium term is the central question in diamond industry analysis through the late 2020s.
How the natural diamond industry is responding
The natural diamond industry's response to lab-grown competition has been coordinated through the Natural Diamond Council (NDC), an industry marketing body backed by the major mining companies including De Beers, Alrosa (prior to sanctions complications), and others. The NDC's marketing focuses on the emotional and narrative value of natural diamonds: their geological origin, their rarity, their role in human history.
De Beers made a specific strategic decision in 2018 to launch its own lab-grown diamond jewellery brand, Lightbox, at a deliberately low price point ($800 per carat for fashion jewellery). The strategy signalled that De Beers intended to monetise the lab-grown segment while simultaneously reinforcing the narrative that lab-grown diamonds are fashion items and natural diamonds are meaningful investments. Lightbox jewellery is explicitly marketed as fashion, not engagement or investment. Source: De Beers Group press releases and Lightbox Jewelry official launch documentation (lightboxjewelry.com).
Market outlook: what the data suggests
The medium-term outlook for the global diamond market involves genuine uncertainty in several dimensions. The Bain 2023 report outlined three scenarios for natural diamond demand through 2030: a recovery scenario where Chinese demand returns and lab-grown stabilises at a lower share; a stagnation scenario where Chinese demand remains subdued and lab-grown continues taking volume; and a decline scenario where lab-grown grows further and natural pricing comes under sustained pressure.
The supply side has its own dynamics. Mine production is expected to decline through the late 2020s as major existing mines approach end-of-life (Argyle already closed in 2020; Diavik, Venetia, and several Russian mines are in their later production phases). No major new diamond mine is expected to reach production before approximately 2030. This supply contraction should in principle support natural diamond prices if demand holds.
India's consumer market trajectory is the most straightforwardly positive element of the outlook. Rising household incomes, the continued growth of organised retail, and the persistence of cultural affiliation with diamond jewellery at weddings suggest continued growth in Indian consumer demand. India is increasingly central to the natural diamond industry's demand story as the US market matures and China remains uncertain.
Sources and data integrity note
Global market size, consumer shares, and natural vs lab-grown trends: Bain and Company Global Diamond Industry Report 2023 (bain.com). De Beers Diamond Insight Report 2023 (debeersgroup.com).
"A Diamond is Forever" campaign history: Epstein, E.J. (1982). "Have You Ever Tried to Sell a Diamond?" The Atlantic.
US engagement ring spend data: The Knot Real Weddings Survey (annual). Lab-grown US market share data: Tenoris market research as cited in trade publications.
De Beers Lightbox launch: De Beers Group press releases; Lightbox Jewelry official documentation (lightboxjewelry.com).
Frequently asked questions
Is the global diamond market growing or declining?
The answer depends on whether you count natural diamonds alone or include lab-grown. Total diamond jewellery value (natural plus lab-grown) is broadly stable to slightly growing globally, but natural diamond value has declined from its 2022 peak due to the combined effects of Chinese demand weakness and lab-grown substitution in the US and other markets. The Bain 2023 report characterised the natural diamond market as in a "period of adjustment" following exceptional demand in 2021–2022. The longer-term trajectory depends primarily on whether Chinese consumer demand recovers and whether lab-grown substitution stabilises or continues to grow.
Why is India's diamond market growing when other markets are flat?
India is at a different stage of the consumer development curve than the US, Europe, or Japan. Diamond jewellery adoption in India is still expanding as household incomes rise and as organised retail brings certified diamond jewellery to consumers who previously had limited access to the category. In mature markets like the US and Europe, diamond penetration for events like engagements is already very high (70 to 80 percent of engagements), leaving limited room for penetration growth. India's penetration is growing from a lower base, with significant headroom across the expanding middle class in Tier 2 and Tier 3 cities.
How has De Beers responded to lab-grown competition?
De Beers launched Lightbox Jewelry in 2018 as a deliberately low-priced lab-grown diamond fashion brand, selling lab-grown stones at $800 per carat in simple settings. The strategy aimed to capture the lower end of the market while reinforcing the narrative separation between lab-grown (fashion, affordable, manufactured) and natural diamonds (meaningful, rare, geologically formed). De Beers has maintained a strict price separation between Lightbox and its natural diamond marketing. The Natural Diamond Council, which De Beers co-funds, runs separate campaigns emphasising natural diamond origin and rarity. Source: De Beers Group Annual Report 2022; Lightbox Jewelry press materials.
What share of global diamonds does India consume versus produce?
India processes approximately 90 percent of the world's diamonds by number (as the world's cutting centre) but consumes approximately 8 to 10 percent of global diamond jewellery by value as a consumer market. Most of what India cuts is exported, primarily to the US, Hong Kong, UAE, and Belgium. India's own domestic consumption, while significant and growing, is a small fraction of what passes through Indian hands in the cutting and polishing stage. This creates a unique structural position: India is simultaneously the world's largest diamond manufacturer and a major consumer market, with the two functions largely disconnected from each other commercially.
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