Synthetic Rough Diamonds from Japan
Unworked synthetic diamonds in their natural crystalline form, directly from the chemical vapor deposition or high-pressure high-temperature process. Classified under HTS 7104.21.00.00 as synthetic diamonds that are unworked or simply sawn or roughly shaped, not strung, mounted, or set.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Obtain lab certification (e.g
• GIA or IGI) confirming synthetic origin to distinguish from natural diamonds under HTS 7102
• Declare exact production method (CVD or HPHT) in documentation; avoid any mounting or setting which shifts to HTS 7115/7116