| 7020.00.30 | 00 | Quartz reactor tubes and holders designed for insertion into diffusion and oxidation furnaces for production of semiconductor wafers | X | Free | | 55% |
| 7020.00.40 | 00 | Glass inners for vacuum flasks or for other vacuum vessels | No. | 6.6% | Free (A,AU,BH,CA, CL,E,IL,J,JO, MA,MX,P, SG) | 37.5¢/each + 45% |
| 7101 | | Pearls, natural or cultured, whether or not worked or graded but not strung, mounted or set; pearls, natural or cultured, temporarily strung for convenience of transport: | | | | |
| 7101.10 | | Natural pearls: | | | | |
| 7101.10.30 | 00 | Graded and temporarily strung for convenience of transport | X | Free | | 10% |
| 7101.21.00 | 00 | Cultured pearls: | | | | |
| 7101.21.00 | 00 | Unworked | X | Free | | 10% |
| 7101.22.30 | 00 | Graded and temporarily strung for convenience of transport | X | Free | | 10% |
| 7102 | | Diamonds, whether or not worked, but not mounted or set: | | | | |
| 7102.10.00 | 00 | Unsorted | carat | Free | | Free |
| 7102.21 | | Industrial: | | | | |
| 7102.21 | | Unworked or simply sawn, cleaved or bruted: | | | | |
| 7102.21.30 | 00 | Simply sawn, cleaved or bruted | carat | Free | | 30% |
| 7102.31.00 | 00 | Unworked or simply sawn, cleaved or bruted | carat | Free | | Free |
| 7102.31.00 | 00 | Nonindustrial: | | | | |
| 7103 | | Precious stones (other than diamonds) and semi-precious stones, whether or not worked or graded but not strung, mounted or set; ungraded precious stones (other than diamonds) and semi-precious stones, temporarily strung for convenience of transport: | | | | |
| 7103.10 | | Unworked or simply sawn or roughly shaped: | | | | |
| 7103.10.20 | 00 | Unworked | carat | Free | | Free |
| 7103.91.00 | | Rubies, sapphires and emeralds | | Free | | 10% |
| 7103.91.00 | 10 | Rubies | carat | | | |
| 7103.99.10 | 00 | Cut but not set, and suitable for use in the manufacture of jewelry | X | Free | | 10% |
| 7104 | | Synthetic or reconstructed precious or semi-precious stones, whether or not worked or graded but not strung, mounted or set; ungraded synthetic or reconstructed precious or semi-precious stones, temporarily strung for convenience of transport: | | | | |
| 7104.10.00 | 00 | Piezo-electric quartz | kg | 3% | Free (A,AU,BH,CA, CL,E,IL,J,JO,MA, MX,P,SG) | 50% |
| 7104.20.00 | 00 | Other, unworked or simply sawn or roughly shaped | X | 3% | Free (A+,AU,BH, CA,CL,D,E,IL,J, JO,MA,MX, P,SG) | 30% |
| 7104.90.10 | 00 | Cut but not set, and suitable for use in the manu- facture of jewelry | No. | Free | | 10% |
Harmonized Tariff Schedule of the United States inquiry: 3203Ã
