Synthetic Sapphire Rough Crystal
Roughly shaped synthetic corundum crystals produced via the Verneuil flame fusion process, used primarily for watch bearings, laser components, and gem cutting. Classified under HTS 7104.29.00.00 as synthetic precious stones (corundum), unworked beyond simple sawing or rough shaping, not strung, mounted, or set. Meets chapter definitions for synthetic precious stones whether worked or graded but excluding strung or set forms.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| šØš³China | 3% | +17.5% | 20.5% |
| š²š½Mexico | 3% | +10.0% | 13% |
| šØš¦Canada | 3% | +10.0% | 13% |
| š©šŖGermany | 3% | +10.0% | 13% |
| šÆšµJapan | 3% | +10.0% | 13% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If unworked and not even roughly shaped
Purely unworked synthetic diamonds fall under 7104.21; rough shaping moves to 7104.29.
If strung (even temporarily) beyond mere transport convenience
Chapter notes specify temporarily strung ungraded stones separately; permanent stringing changes heading.
If industrial-grade synthetic corundum for grinding/abrasives
End-use as millstones or grinding wheels shifts to Chapter 68, not jewelry-grade synthetic gems.
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Import Tips & Compliance
ā¢ Require lab certification (e.g
ā¢ GIA) confirming synthetic origin to distinguish from natural sapphires in HTS 7103
ā¢ Declare exact production method (flame fusion, Czochralski) in documentation; avoid 'gem-quality' phrasing that implies finished gems
Related Products under HTS 7104.29.00.00
Synthetic Alexandrite Rough
Color-change synthetic chrysoberyl (BeAl2O4) grown via Czochralski method, roughly shaped boules. Classified HTS 7104.29.00.00 as other synthetic precious stones, unworked beyond sawing, not strung/set. Rare color-change property but synthetic per chapter rules.
YAG Synthetic Garnet Rough
Yttrium aluminum garnet (YAG) synthetic crystals for laser rods/oscillators, roughly shaped rods. HTS 7104.29.00.00 covers synthetic semiprecious garnets, simply worked, industrial optics grade.
Synthetic Rutile Rough
Synthetic titanium dioxide (rutile) crystals for optical polarizers, roughly sawn. HTS 7104.29.00.00 as synthetic semiprecious stones.
Grown Synthetic Aquamarine Rough
Hydrothermal synthetic beryl (aquamarine color), rough cleaved crystals.
Synthetic Topaz Rough
Flux-grown synthetic aluminum fluorosilicate, rough boules.
Synthetic Ruby Boule
Cylindrical synthetic ruby boule grown by Verneuil method, roughly shaped with minimal faceting removal, destined for optical windows and laser rods. Falls under HTS 7104.29.00.00 as other synthetic precious stones (corundum), simply sawn or roughly shaped but not mounted/set. Excludes alloys or clad materials per chapter note 7.