Quartz
Quartz (other than natural sands); quartzite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape. > Quartz > Quartz
Duty Rate (from China)
Products classified under Tariff item 2506.10.00.00
Artificial Silica Sand for Tableware Crystal Glass
High-spec quartz-derived sand with over 96% silica and low iron, produced artificially for lead-free crystal glass in tableware. This is not natural sand but a processed product, falling under tariff item 2506.10.00 as quartz other than natural sands.
2506.10.00Clear Quartz Crystals
Clear quartz crystals in their natural, unworked state, suitable for optical or piezoelectric applications before any processing. These are raw quartz, not gems or worked stones, and fall under tariff item 2506.10.00 as quartz other than natural sands.
2506.10.00Glass Grade Silica Sand 96% Purity
Crushed and screened quartz sand with 96% silica and 0.5% max iron oxide, standard for container and automotive glass. This artificial product fits tariff item 2506.10.00 as processed quartz sand, not natural sand.
2506.10.00High-Purity Quartz Chunks
High-purity quartz chunks with over 99.9% SiO2, minimally processed for electronics industry feedstock. These are unworked quartz other than sands, meeting the chapter note 1 criteria of being crushed or ground without further processing.
2506.10.00High-Purity Silica Sand for Glass Manufacturing
Artificial silica sand with over 95% silica and less than 0.6% iron oxide, produced by crushing and washing quartz to remove impurities. It is classified under tariff item 2506.10.00 as processed quartz sand, other than natural sands.
2506.10.00Low-Iron Silica Sand for Flat Glass Production
Manufactured from crushed quartzite, this sand has 97% silica and 0.2% iron oxide max, for clear float glass sheets in windows and mirrors. It falls under tariff item 2506.10.00 due to its artificial processing and compliance with purity specifications.
2506.10.00Natural Quartz Pebbles
Natural quartz pebbles collected from riverbeds, not artificially crushed, used in decorative landscaping. These are quartz other than natural sands, provided they are not graded as gravel or aggregates, which would fall under heading 25.17.
2506.10.00Optical Grade Silica Sand 99.5% SiO2
Ultra-pure artificial sand from quartz crushing, with 99.5% silica and iron oxide below 0.03%, ideal for fiber optic and pharmaceutical glass. Classified in tariff item 2506.10.00 due to its non-natural processing and precise purity.
2506.10.00Quartzite Quarry Blocks
Large quartzite quarry blocks, roughly squared for transport, intended for sawing mills. These are quartzite merely cut into blocks of rectangular shape, as described in tariff item 2506.10.00, and not further worked.
2506.10.00Quartzite Slab Blocks
Quartzite rock roughly sawn into rectangular slabs or blocks for further processing. This falls under tariff item 2506.10.00 as quartzite merely cut by sawing, not further worked into finished dimensions, commonly used in construction.
2506.10.00Quartz Ore Lumps
Lumpy quartz ore from mining operations, containing high silica for glassmaking feedstock. These are unprocessed quartz excluding sands, falling under tariff item 2506.10.00 as a primary input for float glass production.
2506.10.00Rectangular Quartzite Slabs
Quartzite cut into rectangular slabs by simple sawing, for subsequent crushing or slab processing. Tariff item 2506.10.00 specifically includes such merely cut forms, used in countertops after further fabrication.
2506.10.00Rough Quartz Crystals
Natural quartz crystals mined from deposits, typically in irregular shapes without further processing beyond extraction. These are classified under tariff item 2506.10.00 as quartz other than natural sands, distinct from processed or crushed forms.
2506.10.00Sawn Quartzite Blocks
Quartzite blocks cut by sawing into rectangular shapes, suitable for monumental or architectural use. Classified in tariff item 2506.10.00 as merely cut, not further dressed or polished, used in stone fabrication industries.
2506.10.00Silica Quartz Lumps
High-silica quartz lumps for ferrosilicon production in metallurgy. These are quartz other than sands, falling under tariff item 2506.10.00 as a key metallurgical flux material, unprocessed beyond mining and crushing.