Black Carbonado Diamond Crystals from Japan
Black carbonado diamond crystals are porous, aggregate diamond formations prized for their impact resistance in industrial drilling. They qualify under HTS 7102.21.10.10 as unworked miner's carbonados, not mounted or set. Primarily sourced from Brazil or Central Africa.
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
• Conduct sieve analysis if fragmented to confirm not in powder form per subheading note
• Maintain chain-of-custody records from mine to avoid conflict diamond allegations