Sawn Miners' Diamonds for Diamond Wire Sawing
Simply sawn miners' diamonds prepared for embedding in diamond wire used in stone cutting and semiconductor slicing. These industrial rough diamonds under HTS 7102.21.10.20 feature the required toughness but lack gem transparency. Critical for marble quarrying and silicon wafer production.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pre-embedded in metal matrix for wire saws
Semi-finished sawing tools with diamonds classify as metal cutting tools, not raw diamonds.
If reconstituted or sintered industrial diamonds
Synthetic reconstructed diamonds for industrial use move to synthetic stones heading.
If bruted (rounded) for specific tool shapes
Bruted processing exceeds 'simply sawn/cleaved' limitation of 7102.21 subheading.
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
• Specify 'diamond wire feedstock' end-use on commercial invoice to support industrial classification
• Separate shipments of sawn vs cleaved miners' diamonds to match exact statistical suffixes
• Watch for re-export requirements under KP if processing occurs before final US consumption
Related Products under HTS 7102.21.10.20
Miners' Type Ia Natural Diamond Rough
Rough natural diamonds classified as miners' diamonds, unworked except for simple sawing or cleaving, primarily Type Ia with nitrogen impurities. These fall under HTS 7102.21.10.20 as industrial-use diamonds not mounted or set, distinguished from gem-quality by color and clarity for mining applications. Used in drill bits for oil and gas extraction.
Rough Miners' Diamonds for PDC Drill Bits
Unworked miners' diamonds selected for polycrystalline diamond compact (PDC) cutting tools in drilling operations. HTS 7102.21.10.20 applies to these simply cleaved natural diamonds unsuitable for gem use due to inclusions and color. Essential for high-pressure oilfield drilling equipment.
Cleaved Industrial Miners' Diamonds 3-5 Carat
Natural rough diamonds from mining operations, simply cleaved into 3-5 carat pieces for industrial saw blades and grinding wheels. Classified under 7102.21.10.20 as unworked miners' diamonds, not suitable for jewelry due to industrial grade imperfections. Key component in geological exploration tools.
Bruted Miners' Diamonds Industrial Grade
Rough diamonds from miners' parcels that have undergone simple bruting (girder shaping) for dressing tools and abrasives. HTS 7102.21.10.20 covers these as 'other' unworked industrial diamonds not mounted, valued for hardness over clarity. Used in surface grinding and lapping operations.