7104.21.00.00/CVD Lab-Grown Diamond Rough/Japan

CVD Lab-Grown Diamond Rough from Japan

Rough synthetic diamonds grown via Chemical Vapor Deposition, typically in plate or block form, simply sawn into facets. Falls under HTS 7104.21.00.00 as unworked or roughly shaped synthetic diamonds, prior to gem-quality processing.

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%

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Import Tips

• Include CVD reactor specs in entry docs to prove synthetic nature

• Rough CVD plates often temporarily strung; declare explicitly per subheading note