HPHT Single Crystal Diamond Boulders from Mexico
Large synthetic single-crystal diamonds grown by high-pressure high-temperature method for industrial sawing/wire drawing dies. Unmounted and worked falls under 7102.29.00 as non-gem industrial diamonds. Typically yellow/brown coloration unsuitable for jewelry.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Include growth method certification (HPHT vs CVD); declare industrial color grade
• Avoid 'gem-quality' language in documentation
• Provide end-use verification for tooling applications