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HSChapter 71
U.S. exports of synthetic diamonds, unworked or simply sawn/roughly shaped (HS 710421) totaled $15.7M in July 2026.
Importers of Synthetic Diamonds, Unworked or Simply Sawn/Roughly Shaped paid $42K in duties in July 2026 — an effective duty rate of 13% on $323K in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataLab-grown diamonds in their raw or minimally processed state — unworked, simply sawn, or roughly shaped — enter US commerce under a single tariff line, 7104210000, distinct from natural diamonds and from worked synthetic stones. Germany and China are the leading suppliers, reflecting both industrial-grade production for abrasive and cutting applications and the growing gem-quality lab-grown diamond trade. Classification at this stage hinges on the degree of processing: any further faceting or polishing moves the goods into the worked subheadings under 7104.91.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
20 shipments/mo
Customs guidance generally treats sawing and rough shaping as minimal operations that do not alter the stone's fundamental form. Once a synthetic diamond has been cut, faceted, bruted, or polished to a finished or near-finished gem shape, it crosses into the 'worked' category under subheading 7104.91, regardless of whether it has been set in jewelry.
Yes — at the unworked or simply sawn stage, both gem-quality (CVD or HPHT) and industrial-grade synthetic diamonds are classified under 7104210000. The US schedule differentiates by intended use only at the worked stage, where 7104911000 covers stones cut for jewelry and 7104915000 covers those not suitable for jewelry.
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 7104210000 | Synthetic Diamonds, Unworked or Simply Sawn/Rough | $323K | 13.14% | 100.00% | $42K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7104210000 | Synthetic Diamonds, Unworked or Simply Sawn/Rough | $15.7M |
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
$323KYoY · Pro
Exports
$15.7MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Exports · July 2026
destination
United Arab Emirates and Ireland together take 98% of it.
customs district
origin
entry
rate provision · imports
the effective duty rate is 13.14%.