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. Commodity Code Description 71 02 10 UNSORTED DIAMONDS 71 02 21 INDUSTRIAL DIAMONDS UNWORKED OR SIMPLY SAWN, CLEAVED OR BRUTED 71 02 29 OTHER INDUSTRIAL DIAMONDS 71 02 31 NON-INDUSTRIAL DIAMONDS, UNWORKED OR SIMPLY SAWN, CLEAVED OR BRUTED 71 02 39 OTHER NON-INDUSTRIAL DIAMONDS