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 15 Other articles of precious metal or of metal clad with precious metal. 71 15 90 Commodity Code Description 71 15 90 00 71 15 90 10 Chain of precious metal 71 15 90 90 Other