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HSChapter 71
U.S. exports of synthetic precious & semiprecious stones, unworked or roughly shaped (other than diamonds) (HS 710429) totaled $252K in July 2026.
Synthetic Precious & Semiprecious Stones, Unworked or Roughly Shaped (Other Than Diamonds) imports of $21K in July 2026 ran 69% below the year-to-date monthly average of $67K.
Last updated: July 2026 dataSynthetic rubies, sapphires, emeralds, spinels, and other lab-created or reconstructed gemstones in unworked or roughly shaped form are consolidated under tariff line 7104290000, which serves as the catch-all for non-diamond synthetic stones at this processing stage. Japan and China are the primary suppliers, with India also a significant source — a supply profile that reflects both industrial boule production and the gem trade's rough-material pipeline. Importers classifying these goods must confirm the stone is genuinely synthetic or reconstructed rather than natural, as natural rough stones fall under Chapter 71's separate headings.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
7 shipments/mo
CBP may request a gemological certificate or manufacturer's declaration confirming the stones are lab-created or reconstructed. For high-value shipments, a report from a recognized gemological laboratory (such as GIA or IGI) specifying 'laboratory-grown' or 'synthetic' origin is the most defensible documentation.
It depends on the form. Unworked or roughly shaped synthetic corundum boules intended for industrial use can fall under 7104290000 if they meet the 'precious or semiprecious stone' character. However, if the material has been further processed into optical-grade blanks or wafers, classification may shift to other chapters. A licensed customs broker should review the specific form and end-use.
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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 |
|---|---|---|---|---|---|
| 7104290000 | Synthetic Semi/Precious Stones Unworked Rough Nes | $21K | 15.90% | 100.00% | $3K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7104290000 | Synthetic Semi/Precious Stones Unworked Rough Nes | $252K |
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
$21KYoY · Pro
Exports
$252KYoY · Pro
12-mo low · imports
YoY · ProFewer than 6 of the last 12 months reported trade above $500K; the trend chart is not shown for thin series.
Through July 2026. Source: U.S. Census Bureau.
Exports · July 2026
destination
Ireland and Mauritius together take 83% of it.
customs district
origin
entry
rate provision · imports
the effective duty rate is 15.90%.