Carbonado Diamond Powder Precursor from Canada
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.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• 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