… Synthetic or reconstructed precious or semi-precious stones, whether or not worked or graded but … or set; ungraded synthetic or reconstructed precious or semi-precious stones, temporarily strung for convenience of …
Explanatory notes
… 71.04 - Synthetic or reconstructed precious or semi-precious stones, whether or not worked or graded but … stones can normally be distinguished from natural stones by microscopic examination (preferably in a medium other than … industry for various purposes : the manufacture of microphones, loudspeakers, instruments for transmitting or …