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HSChapter 71
U.S. imports of industrial diamonds, worked (HS 710229) totaled $337K in April 2026, traded with 12 countries.
Importers of Industrial Diamonds, Worked paid $27K in duties in April 2026 — an effective duty rate of 8.0% on $334K in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 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.
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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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| THAILAND | -- | $288K | +$288K |
| UNITED KINGDOM | $223K | -- | -$223K |
| JAPAN | $46K | $96K | +$50K |
| NETHERLANDS | -- | $96K | +$96K |
| HONG KONG | -- | $95K | +$95K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 7102290050 | IND DIAM EXC MNRS DIAM WORKED NESOI | $291K | 7.70% | $22K |
| 7102290010 | INDUSTRIAL DIAMONDS (MINERS CARBONADOS) WORKED | $46K | 10.00% | $5K |
| 7102290020 | INDUSTRIAL MINERS DIAMONDS NESOI WORKED | $0 | -- | -- |
IND DIAM EXC MNRS DIAM WORKED NESOI
INDUSTRIAL DIAMONDS (MINERS CARBONADOS) WORKED
INDUSTRIAL MINERS DIAMONDS NESOI WORKED
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7102290000 | INDUSTRIAL DIAMONDS, WORKED | $731K |
INDUSTRIAL DIAMONDS, WORKED
7.0K car
GOLD, NONMONETARY, UNWROUGHT NESOI
HS 710812
SILVER, UNWROUGHT NESOI
HS 710691
JEWELRY AND PARTS THEREOF, OF OTH PRECIOUS METAL
HS 711319
OTH PREC METL ARTCLS OR ARTCLS CLAD W PM, NESOI
HS 711590
RHODIUM, UNWROUGHT OR IN POWDER FORM
HS 711031
DIAMONDS, NONINDUSTRIAL, WORKED
HS 710239
| State | Imports | Exports | Balance |
|---|---|---|---|
| California | $210K | $322K | +$112K |
| Illinois | -- | $231K | +$231K |
| New York | $46K | $120K | +$74K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CLEVELAND, OH | $58K | $255K | +$197K |
| ANCHORAGE, AK | -- | $241K | +$241K |
| LOS ANGELES INTERNATIONAL AIRPORT, CA | $217K | -- | -$217K |