India supplies 90.9% of U.S. imports of Synthetic Diamonds, Worked but Not Mounted or Set, across 28 countries (year to date through August 2026).
HHI 8,288 of 10,000 · HHI above 1,800. The sum of each country’s squared percentage share; one country with everything scores 10,000.
28 countries supplying this product to the U.S.
| Rank# | Country | Value | Share | YoY | Duty |
|---|---|---|---|---|---|
| 1 | India | $23.6M | 93.5% | -70.4% | 10.0% |
| 2 | Spain | $446K | 1.8% | +605.1% | 10.0% |
| 3 | Belgium | $250K | 1.0% | +13.5% | 3.1% |
| 4 | United Arab Emirates | $245K | 1.0% | +583.6% | 12.5% |
| 5 | Israel | $223K | 0.9% | -52.1% | 12.5% |
| 6 | Thailand | $165K | 0.7% | -94.6% | 13.6% |
| 7 | Mexico | $90K | 0.4% | +2500.7% | 0.0% |
| 8 | Germany | $58K | 0.2% | -72.5% | 10.0% |
| 9 | China | $38K | 0.2% | -36.5% | 21.1% |
| 10 | Canada | $29K | 0.1% | -42.6% | 0.0% |
| 11 | Turkey | $21K | 0.1% | -42.6% | 12.5% |
| 12 | Austria | $19K | 0.1% | -41.5% | 10.0% |
| 13 | United Kingdom | $19K | 0.1% | -83.5% | 13.6% |
| 14 | Hong Kong | $18K | 0.1% | -4.4% | 12.5% |
| 15 | Australia | $17K | 0.1% | -25.4% | 16.9% |
| 16 | Switzerland | $13K | 0.1% | -55.5% | 12.5% |
| 17 | Singapore | -- | 0.0% | -59.5% | -- |
| 18 | Philippines | -- | 0.0% | -- | -- |
| 19 | Denmark | -- | 0.0% | -64.2% | -- |
| 20 | Japan | -- | 0.0% | +3.8% | -- |
| 21 | New Zealand | -- | 0.0% | -27.0% | -- |
| 22 | Marshall Islands | -- | 0.0% | -- | -- |
| 23 | Armenia | -- | 0.0% | +117.5% | -- |
| 24 | Botswana | -- | 0.0% | +73118.3% | -- |
| 25 | Italy | -- | 0.0% | -- | -- |
| 26 | Bulgaria | hidden | hidden | hidden | hidden |
| 27 | Netherlands | hidden | hidden | hidden | hidden |
| 28 | Ireland | hidden | hidden | hidden | hidden |
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.