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HSChapter 71
U.S. imports of synthetic precious & semiprecious stones, unworked or roughly shaped (other than diamonds) (HS 710429) totaled $82K in April 2026, traded with 11 countries.
Importers of Synthetic Precious & Semiprecious Stones, Unworked or Roughly Shaped (Other Than Diamonds) paid $11K in duties in April 2026 — an effective duty rate of 13% on $82K in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 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.
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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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| UNITED KINGDOM | -- | $206K | +$206K |
| SWITZERLAND | $15K | $11K | -$5K |
| CANADA | -- | $22K | +$22K |
| PAKISTAN | $19K | -- | -$19K |
| CHINA | $18K | -- | -$18K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 7104290000 | SYNTHETIC SEMI/PRECIOUS STONES UNWORKED ROUGH NES | $82K | 12.86% | $11K |
SYNTHETIC SEMI/PRECIOUS STONES UNWORKED ROUGH NES
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7104290000 | SYNTHETIC SEMI/PRECIOUS STONES UNWORKED ROUGH NES | $249K |
SYNTHETIC SEMI/PRECIOUS STONES UNWORKED ROUGH NES
21.5K gm
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 |
|---|---|---|---|
| Oregon | -- | $206K | +$206K |
| Pennsylvania | -- | $22K | +$22K |
| North Carolina | $22K | -- | -$22K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CLEVELAND, OH | -- | $229K | +$229K |
| NEW ORLEANS, LA | $37K | $11K | -$26K |
| ANCHORAGE, AK | $19K | -- | -$19K |