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HSChapter 71
U.S. imports of synthetic precious & semiprecious stones, worked but not mounted or set (other than diamonds) (HS 710499) totaled $3.8M in July 2026, traded with 33 countries.
Importers of Synthetic Precious & Semiprecious Stones, Worked but Not Mounted or Set (Other Than Diamonds) paid $269K in duties in July 2026 — an effective duty rate of 7.4% on $3.7M in dutiable value, based on actual customs collections rather than the published tariff schedule. Synthetic Precious & Semiprecious Stones, Worked but Not Mounted or Set (Other Than Diamonds) imports of $3.8M in July 2026 ran 35% above the year-to-date monthly average of $2.8M.
Last updated: July 2026 dataCut, faceted, or otherwise worked synthetic gemstones — excluding diamonds — that remain loose and unset are covered by two US tariff lines: 7104991000 for stones cut for jewelry and 7104995000 for those worked but not suitable for jewelry. India leads supply at this stage, followed by Germany and China, reflecting both the gem-cutting trade and industrial synthetic stone production. The jewelry-versus-non-jewelry distinction mirrors the treatment of worked synthetic diamonds and carries the same classification documentation requirements.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
96 shipments/mo
Cubic zirconia is a synthetic material used as a diamond simulant and is generally classified as a synthetic precious or semiprecious stone under heading 7104. Worked, unset cubic zirconia would typically fall under 7104991000 (if cut for jewelry) or 7104995000. Moissanite (synthetic silicon carbide used as a gem simulant) may be classified similarly, but its precise classification can depend on CBP's determination of whether it constitutes a 'precious or semiprecious stone' — a licensed customs broker should confirm the applicable line.
For customs purposes, the country of origin of a worked gemstone is generally the country where the last substantial transformation occurred — typically the country where the stone was cut and polished, not where the rough was grown. This means a synthetic sapphire boule grown in one country but cut in India would ordinarily be declared as Indian origin, which has implications for any applicable trade-remedy measures.
Subheading 2 of 5 in heading 7104
Subheading 710499 · $3.8M of $33.5M
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ImportsExports
Imports
$3.8MYoY · Pro
Exports
$1.1MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
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 |
|---|---|---|---|---|---|
| 7104991000 | Syn/ Recon, Gemstones, Cut But not Set for Jewelry | $3.2M | 4.66% | 95.73% | $147K |
| 7104995000 | Syn, Rcnstr Gmstones Wrkd Nt Suitbl for Jewelry | $666K | 18.37% | 94.98% | $122K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7104995000 | Syn, Rcnstr Gmstones Wrkd Nt Suitbl for Jewelry | $712K |
| 7104991000 | Syn/ Recon, Gemstones, Cut But not Set for Jewelry | $424K |
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.
Imports · July 2026
origin
India and China together supply 82% of it.
customs district
destination
entry
rate provision · imports
4.4% enters free of duty; the effective duty rate is 7.05%.