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 Natural or cultured pearls, precious or semi-precious stones, precious metals, metals clad with precious metal and articles thereof; imitation jewellery; coin 71 03 Precious stones (excl. diamonds) and semi-precious stones,..not set... 71 03 91 Rubies, sapphires and emeralds Commodity Code Description 71 03 91 00 Rubies, sapphires and emeralds