Market evolution: Precious stone powder (CN 7105) — 2015–2025
Introduction
This report analyses EU trade in CN 7105 — Dust and powder of natural or synthetic precious or semi-precious stones over the 2015–2025 period. The product encompasses two sub-categories: diamond dust including synthetic diamonds (CN 710510) and dust of other precious or semi-precious stones (CN 710590). Diamond dust accounts for the overwhelming share of both imports and exports.
Over the decade, the EU's trade in this product underwent a structural transformation shaped by the rise of synthetic diamond production. EU exports more than doubled in value while import prices fell by nearly half. Three interconnected dynamics drove this evolution: Ireland's emergence as a dominant export hub, growing import concentration around China, and a dramatic collapse in domestic production values even as output volumes surged.
1. A Decade of Divergence: Soaring Exports and the Irish Breakthrough
EU exports surged while the trade deficit halved
The EU's overall trade position in precious stone powders improved markedly. Exports rose from €14.2 million to €37.7 million (+166%), while imports edged down from €78.3 million to €69.8 million (−11%). The trade deficit consequently narrowed from −€64.1 million to −€32.0 million — a 50% improvement. The best year was 2024, when the deficit reached just −€26.9 million. Importantly, the export take-off accelerated from 2020 onward: prior to that year, annual exports hovered between €10.6 million and €14.2 million, whereas from 2020 they ranged from €28.5 million to €37.7 million.
| Indicator | 2015 | 2025 | Change |
|---|---|---|---|
| Exports (value, €M) | 14.2 | 37.7 | +166% |
| Exports (quantity, t) | 25.2 | 64.8 | +157% |
| Imports (value, €M) | 78.3 | 69.8 | −11% |
| Imports (quantity, t) | 224.8 | 359.5 | +60% |
| Trade balance (€M) | −64.1 | −32.0 | +50% |
Ireland became the EU's export powerhouse
The most striking development was Ireland's transformation into the EU's leading exporter. Irish exports rose from a negligible €23,895 in 2015 to €27.4 million in 2025 — representing 73% of total EU exports by value. Ireland also remained the EU's largest importer at €33.1 million (48% of EU imports), indicating a hub-and-spoke model in which raw diamond powder is imported, processed, and re-exported at higher value. This pattern is consistent with Ireland's emergence as a centre for synthetic diamond manufacturing, bolstered by its favourable corporate tax environment and skilled industrial base.
Most other EU member states saw flat or declining export performance:
| EU Member State | Exports 2015 (€) | Exports 2025 (€) | Change |
|---|---|---|---|
| Ireland | 23,895 | 27,383,791 | +114,501% |
| Belgium | 9,533,182 | 5,680,137 | −40% |
| Germany | 1,351,436 | 2,234,798 | +65% |
| Italy | 236,237 | 177,300 | −25% |
| Luxembourg | 543,623 | 232,424 | −57% |
| Austria | 387,425 | 332,220 | −14% |
| Netherlands | 507,368 | 29,250 | −94% |
Ireland's revealed symmetric comparative advantage (RSCA) stood at 0.94 in 2025 — near the theoretical maximum — with an RCA of 34.4, confirming extreme specialisation in this product.
Export destinations diversified across the Americas and Asia
EU exports became more geographically diversified. The United States emerged as the top destination, followed by Japan and China. Several markets saw triple-digit growth:
| Export Destination | 2015 (€M) | 2025 (€M) | Change |
|---|---|---|---|
| United States | 6.0 | 13.3 | +121% |
| Japan | 1.2 | 7.1 | +478% |
| China | 1.1 | 3.5 | +232% |
| India | 0.5 | 1.3 | +181% |
| South Africa | 0.6 | 1.4 | +133% |
| Brazil | 0.1 | 0.6 | +353% |
| Türkiye | 1.0 | 1.1 | +7% |
The export Herfindahl-Hirschman Index (HHI) declined from 2,145 to 1,801 (−16%), confirming moderate de-concentration. However, volatility varied significantly by partner: exports to China showed the highest coefficient of variation (CV = 1.13), while flows to Türkiye were the most stable (CV = 0.37). A notable price shock in EU exports to China was detected in 2020, with prices spiking by +1,561% — likely linked to COVID-19 supply chain disruptions.
2. China's Grip Tightens as Import Prices Collapse
China consolidated its dominant position in EU imports
Chinese supplies to the EU grew from €44.5 million in 2015 to €53.0 million in 2025 (+19%). By the end of the period, China accounted for approximately 76% of EU imports by value. Meanwhile, most traditional suppliers experienced steep declines:
| Import Partner | 2015 (€M) | 2025 (€M) | Change |
|---|---|---|---|
| China | 44.5 | 53.0 | +19% |
| Switzerland | 9.8 | 3.9 | −60% |
| United States | 6.7 | 2.6 | −62% |
| United Kingdom | 4.3 | 3.5 | −19% |
| Korea, Republic of | 4.6 | 1.3 | −71% |
| Hong Kong | 0.6 | 0.07 | −89% |
| United Arab Emirates | 0.3 | 2.7 | +914% |
The import HHI surged from 3,560 to 5,910 (+66%), reflecting a substantial tightening of supply concentration. The United Arab Emirates was the sole partner to gain ground besides China, with imports growing from €267,436 to €2.7 million (+914%) — consistent with Dubai's growing role as a diamond trading entrepôt.
Import volumes surged while unit prices fell by nearly half
Although import value declined by 11%, import quantities rose by 60% (from 224.8 tonnes to 359.5 tonnes). This implies a collapse in average import unit prices, from €347,567 per tonne to €193,867 per tonne (−44%). This price erosion was driven primarily by the commoditisation of synthetic diamond powder, which has become increasingly cheap to produce at scale.
Volatility analysis reveals that China was by far the most stable import source (CV = 0.19), which further reinforces its attractiveness as a supplier despite concentration risks. By contrast, Hong Kong (CV = 1.66), South Africa (CV = 1.26), and the United Arab Emirates (CV = 0.98) showed highly erratic supply patterns.
EU importers adapted: Ireland grew while continental buyers retrenched
Among EU member states, Ireland was the only importer to substantially increase its purchases:
| EU Member State | Imports 2015 (€M) | Imports 2025 (€M) | Change |
|---|---|---|---|
| Ireland | 24.9 | 33.1 | +33% |
| Germany | 13.3 | 9.8 | −27% |
| Italy | 14.6 | 8.7 | −40% |
| Belgium | 7.5 | 4.4 | −42% |
| Austria | 4.1 | 3.3 | −19% |
| Netherlands | 3.0 | 2.4 | −20% |
Ireland's growing import bill, combined with its surging exports, confirms its role as the EU's primary processing hub. Continental importers, by contrast, reduced purchases — consistent with either demand shifts or displacement by Irish-processed output.
3. The Synthetic Diamond Revolution and EU Production Restructuring
Production volumes rose while values collapsed
The most striking structural signal in the data is the divergence between EU production volumes and values. Output grew from 40 million units in 2015 to 64 million units in 2025 (+60%), while production value plummeted from €111.5 million to €18.0 million (−84%). At its peak, production value reached €214.3 million.
| Production Indicator | 2015 | 2025 | Change |
|---|---|---|---|
| Quantity (million units) | 40 | 64 | +60% |
| Value (€M) | 111.5 | 18.0 | −84% |
This extreme divergence — a near-sixfold increase in implied volume per euro of output — is a hallmark of commoditisation. The most plausible explanation is the maturation of high-pressure high-temperature (HPHT) and chemical vapour deposition (CVD) synthetic diamond technologies, which dramatically lowered per-unit production costs. The EU, and Ireland in particular, scaled up physical output while each unit generated far less revenue.
Diamond dust overwhelmingly dominates, with divergent price trends by segment
Diamond dust (CN 710510) accounts for the vast majority of both trade flows. In 2025, it represented 98% of EU import value and 98% of EU export value. Non-diamond precious stone powders (CN 710590) remained a marginal niche.
| Segment | Flow | 2015 Value (€M) | 2025 Value (€M) | 2015 Qty (t) | 2025 Qty (t) | Price 2015 (€/t) | Price 2025 (€/t) |
|---|---|---|---|---|---|---|---|
| 710510 — Diamond | Imports | 74.8 | 68.6 | 216.0 | 348.2 | 345,895 | 196,842 |
| 710590 — Other | Imports | 3.4 | 1.1 | 8.9 | 11.3 | 380,862 | 100,600 |
| 710510 — Diamond | Exports | 13.1 | 37.1 | 17.7 | 58.0 | 713,783 | 637,932 |
| 710590 — Other | Exports | 1.0 | 0.6 | 7.5 | 6.8 | 132,444 | 86,050 |
Import prices for diamond dust fell by 43% (from €345,895/t to €196,842/t), while non-diamond stone powder prices collapsed by 74% (from €380,862/t to €100,600/t). On the export side, however, diamond dust prices declined more modestly at −11%. This asymmetry suggests the EU — and Ireland in particular — exports higher-specification or processed material at a premium, while importing lower-grade synthetic powder as a feedstock.
The EU's strategic position shifted from self-sufficiency to import reliance
The net import reliance indicator shifted dramatically from −190.9% in 2015 to 61.5% in 2025, reflecting a structural change in the EU's position. In 2015, the EU's large domestic production base (valued at €111.5 million) more than offset its trade deficit; by 2025, with production value at just €18.0 million, the EU became structurally dependent on imports despite a smaller trade deficit.
Meanwhile, export propensity rose from 184.2% to 221.1%, indicating that an increasing share of domestic output was directed to foreign markets — again driven by Ireland's export-oriented synthetic diamond industry. Trade intensity eased slightly from 138.5% to 125.2%, suggesting that while trade remained important, its intensity relative to domestic production moderated.
Conclusion
Between 2015 and 2025, the EU's trade in precious stone powders was fundamentally reshaped by the synthetic diamond revolution. Ireland emerged from near-zero exports to become the bloc's dominant exporter, accounting for 73% of EU outbound shipments by value in 2025 and driving a 50% reduction in the overall trade deficit. Simultaneously, import supply consolidated heavily around China (76% share), whose prices fell by 44% as synthetic production scaled globally. EU production volumes surged 60% while values collapsed 84% — a textbook signature of technology-driven commoditisation.
The net result is a more export-oriented but also more import-reliant EU market. The heavy concentration of imports on a single supplier (China) and the dominance of a single member state (Ireland) in exports represent both efficiency gains and potential strategic vulnerabilities. Looking forward, the trajectory of this market will depend on continued innovation in synthetic diamond technology, the sustainability of Ireland's export growth, and whether EU policymakers seek to diversify import sources to mitigate concentration risk.