HPHT Single Crystal Diamond Boulders
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.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | +35.0% | 35% |
| 🇲🇽Mexico | Free | +10.0% | 10% |
| 🇨🇦Canada | Free | +10.0% | 10% |
| 🇩🇪Germany | Free | +10.0% | 10% |
| 🇯🇵Japan | Free | +10.0% | 10% |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If gem-quality nonsynthetic appearance and clarity
Unworked but gem-quality synthetic diamonds classify separately from industrial grade
If laser-cut into final die shapes
Precision-shaped diamonds for specific tools move to synthetic diamond articles
If used as optical windows in precision instruments
Diamonds for optical/measuring applications may classify by end-use under 9031
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Include growth method certification (HPHT vs CVD); declare industrial color grade
• Avoid 'gem-quality' language in documentation
• Provide end-use verification for tooling applications
Related Products under HTS 7102.29.00
Synthetic Industrial Diamond Powder
Finely ground synthetic diamond particles used in industrial applications like grinding and polishing. Classified under HTS 7102.29.00 as unmounted, worked industrial diamonds not specified as dust or powder elsewhere. Meets subheading note criteria with over 90% passing 0.5mm sieve.
CVD Polycrystalline Diamond Sheets
Chemically vapor deposited polycrystalline diamond plates for cutting tool inserts and wear parts. HTS 7102.29.00 covers these worked but unmounted industrial diamonds. Used in machining ferrous materials where single crystals insufficient.
Industrial Diamond Microns for Lapping
Precisely graded diamond grit (1-50 microns) for final polishing of semiconductors, optics, and precision bearings. HTS 7102.29.00 as worked industrial diamonds in powder form per subheading definition. Friable monocrystalline structure optimized for lapping.
Resazurin-Treated Diamond Particles
Synthetic diamonds coated with resazurin for electrochemical grinding applications. Still classified 7102.29.00 as primary diamond material predominates. Used in advanced manufacturing for precision metal removal.
Monocrystalline Diamond Dresser Blanks
Semi-finished single crystal diamonds for manufacturing grinding wheel dressers. Shaped but unmounted, classified 7102.29.00 as industrial diamonds. Essential for truing precision grinding wheels.
Synthetic Diamond Heat Sinks
CVD diamond plates engineered for thermal management in electronics and lasers. Unmounted worked industrial diamonds under 7102.29.00. Thermal conductivity exceeds copper by 5x.