Carbonado Diamond Powder Precursor
Large carbonado fragments awaiting crushing into industrial diamond powder for wire sawing applications. HTS 7102.29.00.10 specifies these miners' carbonados before powder form (90% through 0.5mm sieve per subheading note). Essential precursor for semiconductor and geological sawing.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | +37.5% | 37.5% |
| 🇲🇽Mexico | Free | +10.0% | 10% |
| 🇨🇦Canada | Free | +10.0% | 10% |
| 🇩🇪Germany | Free | +10.0% | 10% |
| 🇯🇵Japan | Free | +12.5% | 12.5% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing natural diamond dust less than powder spec
Diamond dust not meeting powder criteria (less than 90% through 0.5mm) falls under 7105 for dust and powder.
If chemically processed into colloidal form
Chemically treated carbonado suspensions classify under Chapter 28 as inorganic compounds.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Pre-crush sieve testing documentation prevents reclassification to 7102.10 powder subheadings
• Specify 'not suitable for gem working' in commercial invoice to reinforce industrial classification
• Watch for CBP challenges on carbonado vs. synthetic cubic boron nitride misidentification
Related Products under HTS 7102.29.00.10
Raw Carbonado Diamond
Carbonado diamonds are polycrystalline, non-crystalline aggregates of diamond primarily used in industrial applications due to their extreme toughness and resistance to fracturing. Classified under HTS 7102.29.00.10 as miners' diamonds specifically carbonados, they are unworked or roughly shaped for mining and drilling tools. Their black, porous appearance distinguishes them from gem-quality diamonds.
Carbonado Diamond Chunks for Drilling
Rough carbonado chunks selected for high-impact drilling applications in mining operations, valued for their opacity and fracture resistance. HTS 7102.29.00.10 covers these as industrial miners' diamonds specifically carbonados, distinguishing from single-crystal boart. Typically irregular shapes directly from mining sources.
Black Carbonado Aggregates
Black carbonado diamond aggregates, known as black diamonds in mining circles, used exclusively for high-pressure industrial cutting and grinding. Under HTS 7102.29.00.10 as carbonados, these porous diamond masses exceed 2% carbon purity but lack gem brilliance. Sourced primarily from Brazil and Central Africa.