| 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 |
| 71.02 | Diamonds, whether or not worked, but not mounted or set: |
| －Non-industrial: |
| 7102.31 | －－Unworked or simply sawn, cleaved or bruted |
|