The Bain Global Diamond Industry Report is an annual publication produced jointly by Bain & Company, one of the world's leading management consultancies, and the Antwerp World Diamond Centre (AWDC), the Belgian public-private body that represents the interests of the Antwerp diamond trade. First issued in 2011, the report has become the single most widely cited source of structured economic data on the global diamond industry, covering the full pipeline from rough-diamond mining through cutting and polishing to retail jewellery sales. Its annual release is treated as a benchmark event by miners, manufacturers, traders, midstream financiers, and institutional investors alike.

Background and Purpose

The diamond industry has historically been characterised by a notable opacity of information. Rough prices were set largely by a single dominant supplier — De Beers — for much of the twentieth century, and meaningful independent data on inventory levels, midstream margins, or consumer demand by geography were difficult to obtain. As the industry restructured in the early 2000s following De Beers's abandonment of its role as buyer of last resort, and as new producers in Canada, Russia, and Australia gained market share, the need for transparent, independently compiled economic intelligence became acute.

The AWDC and Bain & Company responded to this gap by commissioning a rigorous annual study drawing on proprietary surveys, trade-body data, customs statistics, and interviews across the pipeline. The collaboration was well-suited to the task: Bain brought the analytical framework and consulting rigour of a global strategy firm, while the AWDC provided access to the Antwerp trade — still the world's largest rough-diamond trading centre by volume — and its network of industry contacts. The result was a report structured to give the industry a shared factual baseline, reducing the information asymmetries that had long disadvantaged smaller players.

Structure and Coverage

Each edition of the report follows a broadly consistent architecture, allowing year-on-year comparison, while adapting its thematic focus to reflect the most pressing issues of the moment. The core sections typically include:

• Macroeconomic context: global GDP growth, consumer confidence indices, and the performance of major luxury-goods categories, situating diamonds within the broader economic environment.
• Mining and rough supply: production volumes by country and company, reserve estimates, capital expenditure trends, and the outlook for new mine development. The report tracks output from the major producing nations — Botswana, Russia, Canada, Australia, South Africa, Angola, and Zimbabwe — and analyses how supply is likely to evolve as existing mines mature and few significant new discoveries enter production.
• Rough-diamond pricing: price indices for rough diamonds by size and quality category, with analysis of the factors driving movements — including tender results from producers such as Alrosa and De Beers, and the influence of polished demand on rough purchasing behaviour.
• Midstream dynamics: the economics of the cutting and polishing sector, concentrated principally in Surat (India), Antwerp, Tel Aviv, New York, and increasingly in southern Africa. This section examines manufacturer margins, inventory accumulation or destocking, access to trade finance, and the structural pressures facing smaller cutting houses.
• Polished-diamond pricing: movements in polished price indices, with attention to the Rapaport price list as an industry reference point and to the divergence between list prices and actual transaction prices.
• Consumer demand: retail sales of diamond jewellery by major market — the United States (consistently the largest single market), China, India, the Gulf states, and Japan — with analysis of the demographic and cultural drivers of demand in each geography.
• Industry outlook: a forward-looking section modelling supply-demand balance over a medium-term horizon, typically five to ten years, with scenario analysis around key variables such as economic growth rates, the pace of Chinese and Indian demand growth, and the trajectory of laboratory-grown diamond adoption.

Significance to the Trade

The report's importance to practitioners across the pipeline can hardly be overstated. For mining companies, it provides an independently compiled view of where the industry stands relative to their own internal projections, and its supply-demand modelling informs capital allocation decisions. For midstream manufacturers and traders, the sections on rough and polished pricing and midstream margins offer a rare window into the economics of a segment that has traditionally been reluctant to share financial data. For retailers and jewellery brands, the consumer-demand analysis provides context for their own sales performance and helps identify which markets are growing or contracting.

For banks and other financial institutions providing trade finance to the diamond sector — a group that became significantly more cautious following a series of high-profile defaults and frauds in the Antwerp and Indian markets in the 2010s — the report's midstream analysis has been particularly valuable. The documentation of inventory build-ups and margin compression in years such as 2015 and 2019 gave lenders an early-warning framework that their own credit teams often lacked.

Institutional investors, including those considering exposure to listed mining companies with significant diamond operations (such as De Beers's parent Anglo American, Alrosa, or Lucara Diamond Corp), use the report as a primary reference for understanding sector fundamentals. Its supply-side modelling — which has consistently highlighted the structural decline in rough production expected from the mid-2020s onward as major mines such as Jwaneng and Venetia approach the end of their economic lives — has been influential in shaping long-term investment theses.

Laboratory-Grown Diamonds: A Recurring Theme

From approximately 2016 onward, the rise of laboratory-grown diamonds (LGDs) — produced by either the high-pressure, high-temperature (HPHT) or chemical vapour deposition (CVD) method — became an increasingly prominent theme in successive editions of the report. The Bain analysis has tracked the rapid decline in LGD production costs, the growing consumer awareness of the category, and the widening price differential between natural and laboratory-grown stones of equivalent grading-report specifications.

The report has generally taken a measured, data-driven position on LGDs, neither dismissing them as a passing novelty nor predicting the wholesale displacement of natural diamonds. Its modelling has highlighted the distinction between the fine and investment-grade natural diamond market — where provenance, rarity, and the narrative of geological formation retain strong consumer resonance — and the fashion and bridal segments, where LGDs have made more substantial inroads. The 2022 and 2023 editions in particular devoted substantial analysis to the speed of LGD price erosion and its implications for midstream economics.

Methodology and Limitations

The report draws on a combination of publicly available data (national customs statistics, company annual reports, central bank data) and proprietary survey data gathered by Bain from industry participants. The AWDC's position at the centre of the Antwerp trade gives the research team access to transaction-level intelligence that would be unavailable to an outside researcher.

It is nonetheless worth noting certain inherent limitations. The diamond industry remains, in absolute terms, less transparent than most commodity markets: a significant portion of rough and polished trading occurs in private transactions without public price discovery, and the data from producing countries such as Zimbabwe and Angola is less reliable than that from Canada or Botswana. The report's consumer-demand figures rely partly on estimates derived from retail sales data and industry surveys rather than direct measurement. These caveats are generally acknowledged within the report itself, and they do not materially diminish its value as the most comprehensive public synthesis of available data.

Additionally, as with any consultancy-produced industry report commissioned in part by a trade body (the AWDC), readers should be aware of the potential for framing that reflects the interests of the commissioning organisation. In practice, the Bain reports have been notably candid about industry difficulties — including midstream margin compression, the challenges of trade finance, and the structural threat posed by LGDs — and have not read as promotional documents. Nevertheless, the provenance is worth bearing in mind when interpreting forward-looking projections.

Key Findings Across the Report's History

Reviewing the report's decade-plus publication history reveals a consistent set of structural themes that have shaped the industry's self-understanding:

• The long-term supply outlook for natural rough diamonds is structurally constrained: no major new mine discoveries of the scale of Jwaneng, Argyle, or Ekati have entered production in recent decades, and the depletion of existing assets is well-documented.
• Consumer demand has been resilient in the United States and has grown substantially in China and India, though the pace and character of growth in those markets has been uneven and sensitive to macroeconomic conditions.
• The midstream — the cutting, polishing, and trading segment — has faced persistent margin pressure, caught between producers with significant pricing power and retailers with strong negotiating leverage. Access to affordable trade finance has been an ongoing structural vulnerability.
• The Argyle mine's closure in 2020 (documented in the 2020 edition) removed the world's largest source of pink diamonds and a significant volume of small brown and near-colourless goods, with implications for both the coloured-diamond market and the supply of lower-quality commercial goods.
• The COVID-19 pandemic (addressed in the 2020 and 2021 editions) produced a sharp but shorter-than-expected demand contraction, followed by a robust recovery driven in part by the shift in consumer spending from experiences to goods during lockdown periods.
• The Russian invasion of Ukraine in 2022 and the subsequent sanctions on Alrosa — which accounts for approximately 30 per cent of global rough production by value — introduced a significant new variable into supply-chain analysis, addressed in detail in the 2022 and 2023 editions.

Access and Citation

The Bain Global Diamond Industry Report is published each year, typically in the fourth quarter, and is made available without charge on both the Bain & Company website and the AWDC website. This open-access model is itself significant: in an industry where information has historically been a source of competitive advantage, the decision to publish findings freely has contributed materially to the report's adoption as a shared industry reference.

It is routinely cited in the annual reports and investor presentations of listed diamond mining companies, in academic research on commodity markets and luxury goods, in financial journalism covering the sector, and in the publications of gemmological and trade organisations. For anyone seeking to understand the structural economics of the diamond industry — as distinct from the gemmological properties of individual stones — it is the indispensable starting point.

Further Reading

• Bain & Company: Diamond Industry Reports (bain.com)
• Antwerp World Diamond Centre: Industry Reports (awdc.be)
• GIA Gems & Gemology (gia.edu)