Section 14 NATURAL OR CULTURED PEARLS, PRECIOUS OR SEMI-PRECIOUS STONES, PRECIOUS METALS, METALS CLAD WITH PRECIOUS METAL, AND ARTICLES THEREOF; IMITAT ION JEWELLERY; COIN 71 Natural or cultured pearls, precious or semi-precious stones, precious metals, m 71 04 Synthetic or reconstructed precious or semi-precious stones, whether or not work 71 04 10 71 04 10 00 Commodity Code Description 71 04 10 00 00 - Piezo-electric quartz 71 04 20 00 00 - Other, unworked or simply sawn or roughly shaped 71 04 21 00 00 Diamonds 71 04 29 00 00 Other 71 04 90 00 00 - Other 71 04 91 00 00 Diamonds 71 04 99 00 00 Other