Market evolution: Diamonds (CN 7102) — 2015–2025

Introduction

This report examines the evolution of the European Union's external trade in diamonds under Combined Nomenclature code 7102 — covering unsorted, industrial and non-industrial diamonds, whether rough or worked but not mounted or set — over the period 2015 to 2025. The data reveals a market that has undergone a profound structural contraction: EU diamond trade value roughly halved over the decade, traditional sourcing routes were disrupted by geopolitical events, and the EU's net trade position flipped from that of a net exporter to a net importer. These dynamics are examined in three sections, focusing first on the overall scale of the contraction, then on the partner-country realignment, and finally on the structural and segment-level shifts within the market.

1. A Decade of Deep Contraction: Scale and Pace of the Decline

The most striking feature of EU diamond trade between 2015 and 2025 is its sheer magnitude of decline. Both imports and exports lost roughly two-thirds of their value over the period, while volumes fell at a more moderate but still substantial pace.

1.1 Import and export values both fell by over 60%

EU imports of diamonds declined from €14.97 billion in 2015 to €5.47 billion in 2025, a contraction of 63.5%. EU exports followed a similar trajectory, falling from €13.92 billion to €4.84 billion (−65.2%). The decline was not linear: values held relatively steady through 2016–2018, dipped during the 2020 COVID-19 shock, partially recovered in 2021–2022, and then accelerated sharply downward from 2023 onward. By 2025, both flows had reached their lowest values in the entire observed window.

Source: General Overview

1.2 Volume declines were significant but less extreme than value drops

Measured in tonnes (net mass), imports fell from 26.7 t in 2015 to 19.1 t in 2025 (−28.3%), while exports dropped from 21.9 t to 10.3 t (−53.0%). In carats (the supplementary unit), the picture was starker: import quantities fell from 104.9 million c/k to 34.5 million c/k (−67.1%), and export quantities from 94.6 million c/k to 27.8 million c/k (−70.7%). The divergence between mass and carat trends suggests a compositional shift toward heavier, lower-carat-count stones (or different processing categories) over the period.

1.3 Unit prices showed divergent trends between imports and exports

EU export prices (EUR per tonne) declined by 25.5% over the period (from €617M/t to €460M/t), though with considerable volatility — reaching a trough of €169M/t around 2020–2021. Import prices fell more sharply, declining 49.4% from €545M/t to €276M/t. On a per-carat basis, however, export prices actually rose 18.5% (from €147/c/k to €174/c/k), while import prices rose 11.0% (from €143/c/k to €158/c/k). This indicates that while total trade volumes shrank dramatically, the average value per carat increased — consistent with a global trend toward fewer but higher-quality or higher-value stones being traded, or with inflation in rough diamond prices.

2. Geopolitical Disruption and the Reconfiguration of Trade Partners

Behind the aggregate decline lies a dramatic reshuffling of the EU's diamond trading partners. Geopolitical events — most notably sanctions on Russian diamonds and the UK's departure from the EU customs territory — fundamentally altered sourcing and destination patterns.

2.1 Russian diamond imports collapsed to near zero following sanctions

Russia was the EU's largest single source of diamond imports in 2015, valued at €2.26 billion. Imports from Russia continued to grow through 2017–2018, peaking near €2.82 billion, before declining sharply from 2022 onward as EU sanctions took effect. By 2025, imports from Russia stood at just €516 — effectively zero. This represents the single most dramatic partner-country shock in the dataset.

2.2 UAE and UK imports also collapsed, albeit for different reasons

Imports from the United Arab Emirates fell from €2.52 billion in 2015 to €105 million in 2025 (−95.8%), reflecting both the general contraction in trade volumes and a possible rerouting of flows. Imports from the United Kingdom declined from €730 million to €31 million (−95.8%), likely connected to the UK's exit from the EU customs union and the resulting trade friction. These three partners — Russia, the UAE, and the UK — collectively lost over €5.4 billion in import value over the decade.

2.3 India remained the EU's dominant partner for both imports and exports

India was the EU's largest export destination throughout the period, absorbing €6.14 billion in 2015 and €1.52 billion in 2025 (−75.3%). It was also the third-largest import source, with values declining more moderately from €1.93 billion to €1.64 billion (−15.3%). India's relative resilience reflects its role as the world's primary diamond cutting and polishing hub: the EU exports rough or semi-processed stones to India and reimports polished diamonds. Canada was another relatively resilient partner, with imports declining only 9.8% (from €674 million to €608 million).

Source: Top partners by value

2.4 Belgium remained overwhelmingly the EU's diamond hub

Among EU Member States, Belgium dominated both imports and exports throughout the period, consistent with Antwerp's historical role as a global diamond trading centre. Belgian imports fell from €13.99 billion to €4.65 billion (−66.7%), and exports from €13.34 billion to €4.46 billion (−66.5%). In 2025, Belgium still accounted for approximately 85% of total EU diamond imports and 92% of exports by value. France, Italy, and Germany played much smaller roles, and the Netherlands showed a notable increase in imports (from €12 million to €101 million, +742.5%), possibly reflecting shifts in customs reporting or new trading flows. Belgium's Revealed Symmetric Comparative Advantage (RSCA) of 0.82 in 2025 — the highest among all EU members — confirms its entrenched specialisation in diamond trade (Market Structure).

3. Structural Shifts: From Net Exporter to Net Importer, Rising Concentration, and Segment Rebalancing

Beyond the headline decline, several structural indicators reveal how the EU's position in the global diamond market fundamentally changed over the decade.

3.1 The EU flipped from net exporter to net importer

One of the most consequential structural shifts was the reversal of the EU's net trade position. In 2015, the net import reliance stood at −50.3%, meaning the EU was a net exporter (exporting substantially more than it imported in value terms, or more precisely, its production exceeded its domestic consumption by a wide margin). By 2025, this figure had swung to +67.4% — the EU now relies on imports to a significant degree. This 234-percentage-point reversal reflects both the collapse in re-exports and a structural shift in the EU's role in the diamond value chain. The export propensity metric reinforces this: it surged from 740% to 1,636%, indicating that what the EU does export represents an ever-larger multiple of its own domestic production, even as total exports shrink — a sign that domestic demand is being increasingly served by direct imports rather than through the EU as an intermediary hub.

3.2 Import concentration increased while export concentration declined

The Herfindahl-Hirschman Index (HHI) for import partners rose from 948 to 1,480 (+56.1%), indicating that the EU's import base became significantly more concentrated as several large suppliers (Russia, UAE, UK) dropped out. By contrast, the export HHI fell from 2,439 to 1,918 (−21.4%), suggesting a modest diversification of export destinations — though it remains above the import level, reflecting the continued dominance of India as an export market.

3.3 Price volatility was extreme for certain partners, with notable shocks in 2020–2022

The volatility analysis reveals that the UK was the most volatile partner by far, with a coefficient of variation (CV) of 1.36 for exports and 1.21 for imports. Russia's import CV was also elevated at 0.67, reflecting the sanctions-driven collapse. The most extreme shock event detected was a UK export price anomaly in 2021, with an abnormality score of 139.5 and a price shift of +3,292% — likely reflecting a one-off or reclassified shipment rather than a genuine market movement. A UAE export price shock in 2022 (+74.3% shift, abnormality 9.2) accounted for 30.3% of EU export value that year, possibly linked to the rerouting of diamond flows following the early stages of Russia sanctions.

3.4 The product mix shifted from unworked to worked non-industrial diamonds

At the segment level, the most notable compositional shift was between subcategories 710231 (non-industrial diamonds, unworked) and 710239 (non-industrial diamonds, worked). On the import side:

• 710231 (unworked non-industrial diamonds) saw imports collapse from 15.3 t to 3.5 t (−77.3% by mass), and from 75.7 million c/k to 15.4 million c/k by carats.
• 710239 (worked non-industrial diamonds) saw imports more than double from 4.6 t to 12.1 t (+160% by mass), though carat volumes remained relatively flat (5.1 million c/k to 5.2 million c/k).

This suggests that the EU increasingly imported already-polished diamonds rather than rough stones for domestic processing — consistent with the decline of Antwerp's cutting and polishing activities and the continued dominance of Indian processing centres. Industrial diamonds (710221 and 710229) remained a relatively small share of total trade.

3.5 EU diamond production volumes rose but values fell

Domestic production tells a paradoxical story: production quantities in carats increased by 20.2% (from 58.2 million c/k to 70.0 million c/k), yet production values declined by 31.4% (from €594 million to €407 million). This implies a sharp drop in the average value per carat of EU-produced diamonds, potentially reflecting a shift in the type of diamonds being produced or synthetic diamond competition affecting pricing.

Conclusion

The EU diamond trade (CN 7102) experienced a profound transformation between 2015 and 2025. Total trade value contracted by roughly two-thirds, driven by a combination of long-term structural shifts — the migration of cutting and polishing activities to India, the rise of synthetic diamonds, and changing consumer preferences — and acute geopolitical disruptions, above all the EU's sanctions on Russian diamonds from 2022 onward. The collapse of imports from Russia, the UAE, and the UK fundamentally reshaped the partner landscape, leaving India and Canada as the most resilient suppliers. The EU's net trade position reversed from a surplus to a significant deficit, and the product mix shifted decisively from rough to polished imports. Belgium's dominance as the EU's diamond gateway remained absolute, but the flows passing through it became smaller and more concentrated. Looking forward, the structural decline in traditional diamond trade volumes, combined with the growing role of lab-grown alternatives, suggests that the contraction observed over this decade may represent a new baseline rather than a temporary trough.