Synthetic Sapphire Rough Crystal from Japan
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.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Require lab certification (e.g
• GIA) confirming synthetic origin to distinguish from natural sapphires in HTS 7103
• Declare exact production method (flame fusion, Czochralski) in documentation; avoid 'gem-quality' phrasing that implies finished gems