Section 14 NATURAL OR CULTURED PEARLS, PRECIOUS OR SEMI-PRECIOUS STONES, PRECIOUS METALS, METALS CLAD WITH PRECIOUS METAL AND ARTICLES THEREOF; IMITATION JEWELLERY; COIN 71 HATURAL OR CULTURED PEARLS, PRECIOUS OR SEMI-PRECIOUS STONES, PRECIOUSMETALS, METALS CLAD WITH PRECIOUS METAL, AND ARTICLES THEREOF; IMITATIONLEWELLERY; COIN 71 02 DIAMONDS, WHETHER OR NOT WORKED, BUT NOT MOUNTED OR SET. 71 02 31 NON-INDUSTRIAL DIAMONDS, UNWORKED OR SIMPLY SAWN, CLEAVED OR BRUTED Commodity Code Description 71 02 31 00 NON-INDUSTRIAL DIAMONDS, UNWORKED OR SIMPLY SAWN, CLEAVED OR BRUTED