Check USGS's current dimension-stone and granite import-source data to assess a fabrication shop's exposure to tariff/supply risk by country of origin.
domain: usgs.gov (National Minerals Information Center) · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Pull the current-year Dimension Stone chapter from USGS Mineral Commodity Summaries (pubs.usgs.gov/periodicals/mcs2026/mcs2026-stone-dimension.pdf, published February 2026)
Note granite import sources by value for 2021-24: Brazil 41%, India 25%, China 17%, Italy 6%, other 11%
Note overall net import reliance for dimension stone at 81% of apparent consumption for 2025 (estimated) — the US is heavily import-dependent for this category
Cross-reference a shop's actual supplier countries against these concentrations to flag exposure to India- or China-specific AD/CVD orders or the broader Section 201 quartz safeguard action
Check baseline dimension-stone tariff rates (free to 6.5% ad valorem depending on type and preparation, per the 2025 schedule cited in the same USGS report) as a baseline before layering in any AD/CVD or safeguard duties
Known gotchas
USGS dimension-stone data covers natural stone (granite, limestone, marble, sandstone, slate) — it does not cover engineered/quartz surface products, which are tracked separately under trade-remedy dockets, not USGS mineral statistics
Import-source percentages are historical (2021-24 data in the February 2026 report) and lag current-year sourcing shifts — treat them as a directional baseline, not real-time supplier risk data
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