U.S. exports of Quartz & Quartzite, Crude or Roughly Trimmed (SITC 27851) totaled $20.9M in August 2026.
Importers of Quartz & Quartzite, Crude or Roughly Trimmed paid $211K in duties in August 2026, an average duty rate of 8.27% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Quartz & Quartzite, Crude or Roughly Trimmed imports of $2.5M in August 2026 ran 13% below the year-to-date monthly average of $2.9M.
Last updated: August 2026 dataHigh-purity quartz and quartzite in crude or minimally processed form — excluding natural sands — serve as critical feedstocks for semiconductor-grade silicon, optical glass, and refractory materials. The classification distinguishes this mineral from processed silica products, making correct tariff placement essential when shipments arrive as rough blocks or sawn rectangular slabs. Demand is closely tied to the electronics and solar-panel manufacturing sectors, where silica purity specifications drive sourcing decisions.
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184 import shipments a month
Natural sands are explicitly excluded from this heading regardless of silica content. Crude quartz and quartzite qualify here when presented in lump, block, or sawn rectangular/square slab form without further processing such as grinding or purification.
Semiconductor fabrication (crucibles and wafer production), solar photovoltaic manufacturing, specialty glass, and refractory linings are the primary end-use sectors. Purity grade and particle size requirements often dictate supplier selection more than price alone.
Basic heading 49 of 239 in section 2
Basic heading 27851 · $20.9M of $7.8B
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Exports · August 2026
destination
China and Japan together take 93% of it.
customs district
Census does not publish district detail for this classification system.
origin
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$2.5MYoY · free account
Exports
$20.9MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $36.1M of Quartz & Quartzite, Crude or Roughly Trimmed and exported $130.7M.
Through August 2026. Source: U.S. Census Bureau.