Chapter 7105 — Customs Tariff Headings
Subheadings
Products classified under Tariff item 71.05
80 Mesh Natural Diamond Powder
80 mesh natural diamond powder is fine natural diamond dust graded to pass through a 0.5 mm sieve, derived from crushed industrial-grade diamonds. It is classified under tariff item 7105.10.00 as natural diamond powder. This product meets the subheading note for powder form.
7105.10.00Copper-Coated Synthetic Diamond Dust for Wire Drawing
Copper-coated synthetic diamond dust used in wire drawing dies, with 90% or more passing a 0.5 mm sieve. The metal coating does not alter its classification as dust or powder of synthetic precious stones under Chapter 71. It is essential for metal fabrication processes requiring fine, durable abrasive particles.
7105.10.00CVD Diamond Powder Residue
CVD diamond powder residue is a byproduct of chemical vapor deposition synthetic diamond production, refined to pass a 0.5 mm sieve. It is classified as synthetic diamond powder under tariff item 7105.10.00, as it consists of dust and powder of synthetic precious stones. This product is not jewelry and falls under Chapter 71 notes.
7105.10.00CVD Synthetic Diamond Dust 80 Mesh
CVD synthetic diamond dust at 80 mesh is milled from chemical vapor deposition synthetic diamonds. It is classified under tariff item 7105.10.00 as synthetic diamond powder, meeting the powder form specifications. This product is used in thermal paste formulations and is not jewelry.
7105.10.00CVD Synthetic Diamond Micron Powder 0.5-5 Microns
CVD synthetic diamond micron powder graded to 0.5-5 micron size, used in high-precision polishing of sapphire windows and optical components. It meets the powder sieve definition with 90%+ passing 0.5 mm. It falls under Chapter 71 as dust or powder of synthetic precious stones.
7105.10.00Diamond Lapping Powder 325 Mesh
Diamond lapping powder at 325 mesh is a synthetic diamond powder used for polishing optical lenses. It meets the powder form criteria with 90% or more passing through a 0.5 mm sieve. This product falls under tariff item 7105.10.00 as dust and powder of diamonds.
7105.10.00Diamond Paste Carrier Powder
Base diamond powder used in manufacturing lapping pastes, synthetic, sieve-compliant for tariff purposes. Meets precious stone powder definition.
7105.10.00Gold-Coated Synthetic Diamond Powder for Electronics
Ultra-fine synthetic diamond powder coated with gold, with 90%+ passing a 0.5 mm sieve, used for EMI shielding in microelectronics. The gold coating is a minor constituent and does not change its classification as synthetic diamond powder. It falls under Chapter 71 as dust or powder of precious or semi-precious stones.
7105.10.00HPHT Monocrystalline Synthetic Diamond Powder 200 Mesh
HPHT monocrystalline synthetic diamond powder at 200 mesh (74 micron or finer), suitable for wire sawing and dies. It meets the powder sieve definition with 90%+ passing 0.5 mm. It falls under Chapter 71 as dust or powder of synthetic precious stones.
7105.10.00HPHT Natural Diamond Lapping Powder
HPHT natural diamond lapping powder is refined to 80 mesh fineness for optical lapping. It is classified under tariff item 7105.10.00 as natural diamond powder, meeting the powder form criteria. This product is used in finishing precision components.
7105.10.00HPHT Synthetic Diamond Powder
HPHT synthetic diamond powder is produced via high-pressure high-temperature synthesis and used in wire saw slurry. It is in powder form, with 90% or more passing through a 0.5 mm sieve, qualifying under tariff item 7105.10.00. This product is not metal-clad and is classified as synthetic diamond powder.
7105.10.00Industrial Diamond Powder
Industrial diamond powder is a fine powder from natural or synthetic diamonds, with 90% or more passing through a 0.5 mm sieve, used for grinding and polishing tools. It is classified under tariff item 7105.10.00 as dust and powder of diamonds. This product is not jewelry and is excluded from other chapters by Note 3.
7105.10.00Metal-Coated Synthetic Diamond Dust for Abrasives
Nickel-coated synthetic diamond dust for resinoid grinding wheels, meeting the 0.5 mm sieve powder criteria. The nickel coating improves bonding but does not affect its classification as synthetic diamond powder. It is used in abrasive applications across metalworking industries.
7105.10.00Monocrystalline Diamond Powder
Monocrystalline diamond powder is a high-purity synthetic powder for semiconductor wafer lapping, meeting strict powder form criteria. It falls under tariff item 7105.10.00 as synthetic diamond powder. The product has no metal plating, aligning with Chapter 71 notes.
7105.10.00Monocrystalline Diamond Powder 80 Mesh
Monocrystalline diamond powder at 80 mesh is single-crystal natural diamond powder crushed and sieved for ultra-precision applications. It falls under tariff item 7105.10.00 as natural diamond powder. This product is critical for sapphire window polishing and aerospace uses.
7105.10.00Nano-Diamond Powder USP Grade
Nano-diamond powder USP grade is ultra-fine synthetic diamond powder for biomedical polishing, with 100% passing through a 0.5 mm sieve. It is classified under tariff item 7105.10.00 as synthetic diamond powder. This product is not mixed with semiprecious stones and falls under Chapter 71.
7105.10.00Nano-Grade Diamond Powder 80+ Mesh
Nano-grade diamond powder refined beyond 80 mesh is ultra-fine natural diamond nanoparticles for biomedical and electronics uses. It meets the powder criteria with 90%+ through a 0.5 mm sieve, classified under tariff item 7105.10.00. This product is used in drug delivery systems and conductive coatings.
7105.10.00Nano Synthetic Diamond Powder 1-2 Nanometers Ultrafine
Detonation nano-synthetic diamond powder with 1-2 nm primary particles, aggregated to 80 mesh fines, used in metal matrix composites and lubricants. It meets the powder sieve definition with 90%+ passing 0.5 mm. It falls under Chapter 71 as dust or powder of synthetic precious stones.
7105.10.00Natural Diamond Cylinder Liner Powder
Coarse-fine natural diamond powder (20-30 micron) for engine cylinder liner finishing. Qualifies as powder of natural diamonds under the tariff item.
7105.10.00Natural Diamond Finishing Powder 0.25 Micron
Nano-fine 0.25 micron natural diamond powder for final surface finishing, exceeding powder form criteria. Classified as other natural diamond powder.
7105.10.00Natural Diamond Gem Cutting Powder
Powder from natural diamonds for cutting and faceting gemstones, meeting 90% 0.5mm sieve threshold. Used in lapidary applications.
7105.10.00Natural Diamond Grinding Powder
Natural diamond grinding powder is derived from crushed natural diamonds and complies with the 90% through 0.5 mm sieve requirement. It is used in high-end polishing compounds and falls under tariff item 7105.10.00. This product is treated as precious stone powder per Chapter 71.
7105.10.00Natural Diamond Industrial Slurry Powder Base
Dry base powder of natural diamonds for mixing industrial slurries, in powder form per subheading. Classified as other natural diamond dust.
7105.10.00Natural Diamond Lapping Powder
Ultra-fine natural diamond powder (0-10 micron) for lapping optical and semiconductor surfaces, meeting 90% through 0.5mm sieve requirement. Distinct from abrasive articles.
7105.10.00Natural Diamond Micron Powder Grade M10
Grade M10 natural diamond micron powder (avg. 10μm) for precision lapping, compliant with 0.5mm sieve powder definition. Excludes abrasive articles of Chapter 68.
7105.10.00Natural Diamond Optical Polishing Powder
Sub-micron natural diamond powder for polishing glass and optics to lambda/10 flatness. Meets criteria for other natural diamond powder.
7105.10.00Natural Diamond PCD Substrate Powder
Natural diamond powder used in polycrystalline diamond (PCD) substrate production, fine powder form. Classified as other natural diamond dust for tooling.
7105.10.00Natural Diamond Polishing Powder 1-3 Micron
High-purity natural diamond powder sized 1-3 microns for metallographic polishing, qualifying as powder form under subheading note. Excludes gem-quality stones.
7105.10.00Natural Diamond Powder for Wire Sawing
Specialty natural diamond powder optimized for wire sawing silicon wafers, fine enough for powder classification. Classified as other natural diamond dust.
7105.10.00Natural Diamond Powder Type IIA
Type IIA high-purity natural diamond powder from select mines, used in electronics polishing, powder form certified. Fits other natural diamond dust classification.
7105.10.00Natural Diamond Precision Honing Powder
5-15 micron natural diamond powder for hydraulic cylinder honing, compliant with powder definition. Classified as other natural diamond powder.
7105.10.00Natural Diamond Superabrasive Powder
Monocrystalline natural diamond powder for superabrasive applications in tool sharpening, with 90%+ fines through 0.5mm. Classified as other natural diamond powder.
7105.10.00Nickel-Coated Synthetic Diamond Powder for Thermal Paste
High-purity synthetic diamond powder nickel-coated for thermal interface materials in CPUs, certified as powder form. The nickel coating enhances thermal conductivity while the product remains synthetic diamond powder. It falls under Chapter 71 as dust or powder of synthetic precious stones.
7105.10.00Polycrystalline Diamond Powder
Polycrystalline diamond powder is a synthetic powder for thermal management coatings, with 90% through a 0.5 mm sieve. It fits tariff item 7105.10.00 as diamond dust and powder. This product is not a jewelry article per Note 9.
7105.10.00Polycrystalline Synthetic Diamond Powder 325 Mesh Lapping Grade
Polycrystalline synthetic diamond powder at 325 mesh (44 micron), optimized for lapping carbide and ceramic substrates. It meets the powder sieve definition with 90%+ passing 0.5 mm. It falls under Chapter 71 as dust or powder of synthetic precious stones.
7105.10.00Synthetic Diamond Micron Powder
Synthetic diamond micron powder is ultra-fine, ranging from 1-50 microns, and meets the 0.5 mm sieve test. It is ideal for precision lapping and coating applications, classified under tariff item 7105.10.00. This product is excluded from jewelry by Chapter 71 notes.
7105.10.00Synthetic Diamond Micron Powder 80 Mesh
Ultra-fine synthetic diamond powder, 80 mesh or finer, produced via HPHT or CVD methods from carbon precursors. Essential for precision grinding and polishing applications.
7105.10.00Synthetic Diamond Polishing Powder 1000 Mesh Optical Grade
1000 mesh (10-20 micron) synthetic diamond polishing powder for optical lens and mirror finishing. It meets the powder sieve definition with 90%+ passing 0.5 mm. It falls under Chapter 71 as dust or powder of synthetic precious stones.
7105.10.00Synthetic Diamond Powder Coated with Silver
Fine synthetic diamond powder coated with a thin layer of silver, with 90% or more passing a 0.5 mm sieve. The silver coating is a minor constituent and does not change its classification as synthetic diamond powder. It is used for enhanced thermal conductivity in various industrial applications.
7105.10.00Titanium-Coated Synthetic Diamond Powder for Optics
Precision-grade synthetic diamond powder with titanium coating for lapping optical lenses, 90%+ 0.5mm sieve compliant. The titanium coating does not affect its classification as synthetic diamond powder. It is essential for high-clarity optical finishing processes.
7105.90.00Alexandrite Powder
Synthetic alexandrite (chrysoberyl) powder, a semi-precious stone powder, is used for research into color-change effects and as an abrasive in polishing. It is classified under tariff item 7105.90.00 as 'other' dust and powder of synthetic precious or semi-precious stones, excluding diamonds.
7105.90.00Aquamarine Grinding Powder
Natural beryl (aquamarine) powder, a semi-precious stone powder, is used for high-end lapidary work and optical applications. It falls under tariff item 7105.90.00 as 'other' dust and powder of natural precious or semi-precious stones.
7105.90.00Emerald Grinding Powder
Fine powder from natural or synthetic emeralds, used for gemstone faceting and precision grinding, is classified under tariff item 7105.90.00. This item covers 'other' dust and powder of precious or semi-precious stones, excluding diamond powder.
7105.90.00Garnet Lapping Powder
Natural almandine garnet powder, used for precision lapping of optical components, is classified under tariff item 7105.90.00. This item covers 'other' dust and powder of natural semi-precious stones, provided the powder meets the sieve requirement.
7105.90.00Moissanite Micron Powder
Synthetic moissanite (silicon carbide gem) powder, used in advanced polishing compounds, is classified under tariff item 7105.90.00. This item covers 'other' dust and powder of synthetic precious or semi-precious stones, excluding diamond.
7105.90.00Natural Ruby Dust
Ultrafine dust from natural rubies, with 90% or more passing through a 0.5 mm mesh, is used in precision lapping and optical polishing. It is classified under tariff item 7105.90.00 as 'other' dust and powder of natural precious stones.
7105.90.00Peridot Dust
Natural olivine (peridot) powder, used as an alternative to sandblasting materials, is classified under tariff item 7105.90.00. This item covers 'other' dust and powder of natural semi-precious stones.
7105.90.00Sapphire Polishing Powder
High-purity synthetic sapphire (corundum) powder, used for semiconductor wafer polishing, is classified under tariff item 7105.90.00. This item covers 'other' dust and powder of synthetic semi-precious stones, excluding diamond.
7105.90.00Spinel Polishing Grit
Synthetic spinel powder, used in military optics and satellite lens polishing, is classified under tariff item 7105.90.00. This item covers 'other' dust and powder of synthetic semi-precious stones.
7105.90.00Synthetic Cubic Zirconia Powder
Synthetic cubic zirconia (ZrO2) powder, micronized for use in jewelry manufacturing and coatings, is classified under tariff item 7105.90.00. This item covers 'other' dust and powder of synthetic semi-precious stones.
7105.90.00Synthetic Diamond Powder
Synthetic diamond powder, where 90% or more passes through a 0.5 mm sieve, is used for industrial grinding and polishing. It is classified under tariff item 7105.90.00 as 'other' dust and powder of synthetic precious stones, specifically excluding diamond powder classified elsewhere.
7105.90.00Synthetic Opal Powder
Lab-created silica-based opal powder, used for iridescent coatings and polishing, is classified under tariff item 7105.90.00. This item covers 'other' dust and powder of synthetic semi-precious stones.
7105.90.00Topaz Abrasive Dust
Natural topaz dust, finely ground for abrasive applications in glass and metal polishing, is classified under tariff item 7105.90.00. This item covers 'other' dust and powder of natural semi-precious stones.
7105.90.00Tourmaline Abrasive Powder
Natural tourmaline dust, used for specialty polishing of hardened steels and ceramics, is classified under tariff item 7105.90.00. This item covers 'other' dust and powder of natural semi-precious stones.
7105.90.00YAG Laser Powder
Yttrium aluminum garnet (YAG) synthetic powder, used as a precursor for laser crystals, is classified under tariff item 7105.90.00. This item covers 'other' dust and powder of synthetic precious or semi-precious stones.