Precious stones (other than diamonds) and semiprecious stones, whether or not worked or graded but not strung, mounted or set; ungraded precious stones (other than diamonds) and semiprecious stones, temporarily strung for convenience of transport
Precious stones and semiprecious stones, unworked or simply sawn or roughly shaped, whether or not graded (excl. diamonds and imitation precious stones and semiprecious stones)