| 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: |
| －Industrial: |
| 7102.21 | －－Unworked or simply sawn, cleaved or bruted |
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