| Tariff Classification |
| section 14 | Natural or cultured pearls, precious or semi-precious stones, precious metals, metals clad with precious metal, and articles thereof; imitation jewellery; coin |
| chapter 71 | Natural or cultured pearls, precious or semi-precious stones, precious metals, metals clad with precious metal, and articles thereof; imitation jewellery; coin |
| 71.10 | Platinum, unwrought or in semi-manufactured forms, or in powder form: |
| －Iridium, osmium and ruthenium: |
| 7110.41 | －－Unwrought or in powder form |
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