China supplies 29.4% of U.S. imports of Basalt, Porphyry, and Other Monumental or Building Stone, across 19 countries (year to date through September 2026).
HHI 1,953 of 10,000 · HHI above 1,800. The sum of each country’s squared percentage share; one country with everything scores 10,000.
19 countries supplying this product to the U.S.
| Rank# | Country | Value | Share | YoY | Duty |
|---|---|---|---|---|---|
| 1 | China | $141K | 30.6% | +469.2% | 40.5% |
| 2 | Portugal | $104K | 22.6% | +2363.2% | 10.0% |
| 3 | Canada | $103K | 22.4% | -23.6% | 0.0% |
| 4 | Turkey | $41K | 8.9% | -30.6% | 15.5% |
| 5 | India | $29K | 6.2% | -6.1% | 13.0% |
| 6 | Lebanon | $14K | 3.0% | -- | 3.0% |
| 7 | Mexico | $12K | 2.5% | +44.0% | 0.0% |
| 8 | Finland | $10K | 2.1% | +15.5% | 10.0% |
| 9 | South Africa | $6K | 1.2% | -12.7% | 15.5% |
| 10 | Japan | $3K | 0.6% | -- | 12.5% |
| 11 | Italy | -- | 0.0% | -26.2% | -- |
| 12 | Estonia | -- | 0.0% | -- | -- |
| 13 | Germany | -- | 0.0% | +76.9% | -- |
| 14 | Spain | -- | 0.0% | -38.0% | -- |
| 15 | Pakistan | -- | 0.0% | -50.8% | -- |
| 16 | Denmark | -- | 0.0% | -91.0% | -- |
| 17 | Hong Kong | -- | 0.0% | -- | -- |
| 18 | Belgium | -- | 0.0% | -23.9% | -- |
| 19 | Norway | -- | 0.0% | +216.9% | -- |
Duty is the duty Census calculated on this month's imports for consumption from each country, as a share of their customs value. It applies the rates in force, additional duties such as Section 301, 232 and IEEPA included and claimed trade-agreement preferences netted out, so it is an observed rate rather than a statutory one. It is an estimate, not duty collected: antidumping and countervailing duties, fees and later refunds are not in it. YoY compares year-to-date value with the same months last year.