Harmonized System
U.S. exports of Industrial Diamonds, Worked (HS 710229) totaled $588K in August 2026.
Importers of Industrial Diamonds, Worked paid $19K in duties in August 2026, an average duty rate of 6.99% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Industrial Diamonds, Worked imports of $276K in August 2026 ran 20% below the year-to-date monthly average of $343K.
Last updated: August 2026 dataWorked industrial diamonds — stones that have been further processed beyond simple sawing or cleaving for use in cutting tools, wire-drawing dies, dressing tools, and precision abrasive applications — arrive in the US primarily from the United Kingdom, Belgium, and the Netherlands, reflecting the role of European precision-tooling manufacturers as key processors and re-exporters. The US schedule distinguishes miners' carbonados (7102290010), other miners' diamonds (7102290020), and a residual category for other worked industrial diamonds (7102290050). Because these products are incorporated into capital equipment and industrial tooling rather than consumer goods, classification disputes often center on whether the diamond component has been sufficiently worked to leave this heading or whether it has already been incorporated into a tool article classified elsewhere in Chapter 82.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
20 import shipments a month
A worked industrial diamond remains in Chapter 71 as long as it is traded as a loose stone or unmounted component. Once it is permanently mounted or bonded into a tool — such as a diamond-tipped drill bit or a grinding wheel — the article typically classifies under Chapter 82 (tools) or Chapter 68 (abrasive articles), depending on its form and function. Importers should review the General Rules of Interpretation and any applicable chapter notes when the diamond is already integrated into a tool body.
European suppliers — particularly in the UK, Belgium, and the Netherlands — are precision-tooling and diamond-processing hubs that add value by cutting, shaping, and mounting industrial diamonds to tight tolerances. Primary African producers export rough or minimally processed stones; the working and finishing operations that create the products under this heading are concentrated in European manufacturing centers.
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Subheading 3 of 5 in heading 7102
Subheading 710229 · $588K of $383.4M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 7102290050 | Ind Diam Exc Mnrs Diam Worked NESOI | $235K | 7.79% | 97.54% | $18K |
| 7102290020 | Industrial Miners Diamonds NESOI Worked | $41K | 2.41% | 100.00% | $995 |
| 7102290010 | Industrial Diamonds (Miners Carbonados) Worked | — | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7102290000 | Industrial Diamonds, Worked | $588K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
ImportsExports
Imports
$276KYoY · free account
Exports
$588KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $3.5M of Industrial Diamonds, Worked and exported $36.8M.
Through August 2026. Source: U.S. Census Bureau.
Exports · August 2026
destination
Thailand and Hong Kong together take 54% of it.
customs district
entry
rate provision · imports
2.1% enters free of duty; duty collected equals 6.99% of imports for consumption.