China supplies 30.3% of U.S. imports of Synthetic Precious & Semiprecious Stones, across 15 countries (year to date through September 2026).
HHI 1,913 of 10,000 · HHI above 1,800. The sum of each country’s squared percentage share; one country with everything scores 10,000.
15 countries supplying this product to the U.S.
| Rank# | Country | Value | Share | YoY | Duty |
|---|---|---|---|---|---|
| 1 | Japan | $42K | 74.5% | -40.3% | 12.5% |
| 2 | China | $14K | 25.5% | +96.6% | 23.0% |
| 3 | United Kingdom | -- | 0.0% | -61.5% | -- |
| 4 | Netherlands | -- | 0.0% | -83.2% | -- |
| 5 | Germany | -- | 0.0% | +494.2% | -- |
| 6 | Switzerland | -- | 0.0% | -- | -- |
| 7 | Kazakhstan | -- | 0.0% | -- | -- |
| 8 | Spain | -- | 0.0% | -- | -- |
| 9 | India | -- | 0.0% | -21.6% | -- |
| 10 | Pakistan | -- | 0.0% | -- | -- |
| 11 | Thailand | -- | 0.0% | +58.5% | -- |
| 12 | Singapore | -- | 0.0% | +164.3% | -- |
| 13 | Canada | -- | 0.0% | -- | -- |
| 14 | Australia | -- | 0.0% | -87.1% | -- |
| 15 | Sint Maarten | -- | 0.0% | -- | -- |
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.