Standard International Trade Classification
U.S. imports of Granite, Porphyry, Basalt, Sandstone & Other Monumental or Building Stone, Roughly Trimmed or in Blocks (SITC 27313) totaled $2.2M in August 2026, imported from 29 countries.
Importers of Granite, Porphyry, Basalt, Sandstone & Other Monumental or Building Stone, Roughly Trimmed or in Blocks paid $277K in duties in August 2026, an average duty rate of 12.69% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Granite, Porphyry, Basalt, Sandstone & Other Monumental or Building Stone, Roughly Trimmed or in Blocks imports of $2.2M in August 2026 ran 17% below the year-to-date monthly average of $2.6M.
Last updated: August 2026 dataGranite, basalt, sandstone, porphyry, and other non-calcareous monumental and building stones at the block or rough-cut stage serve as primary inputs for countertop fabrication, paving, cladding, and monument production. Granite dominates commercial volumes in this heading, with major supply flowing from countries with large quarrying industries. Unlike the calcareous stone heading, this category captures the harder igneous and sedimentary stones, and the 'not elsewhere specified' scope means it also catches less common decorative stones that don't fit narrower headings. The degree of surface finishing — particularly whether faces have been polished or profiled — is the key boundary between this heading and finished worked stone classifications.
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208 import shipments a month
Granite that has been polished, cut to non-rectangular shapes, profiled, or otherwise further worked into finished architectural elements — such as countertop blanks with finished edges or paving sets — typically moves into headings covering worked monumental or building stone. Importers should document the processing state and surface condition of the material to support classification at entry.
Basalt in block or rough-cut form for construction or monumental use is captured here. However, basalt processed into industrial forms — such as basalt fiber, crushed aggregate, or mineral wool — is classified under entirely different headings based on the form and end-use. The classification of basalt depends critically on its physical form and the degree of processing at the time of import.
Basic heading 112 of 239 in section 2
Basic heading 27313 · $2.2M of $3.8B
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Imports · August 2026
origin
Canada and India together supply 50% of it. China pays 40.4% duty; Canada 0.3%.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$2.2MYoY · free account
Exports
$2.2MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $32.1M of Granite, Porphyry, Basalt, Sandstone & Other Monumental or Building Stone, Roughly Trimmed or in Blocks and exported $20.6M.
Through August 2026. Source: U.S. Census Bureau.