… stones, whether or not worked or graded but not strung, mounted or set; ungraded synthetic or reconstructed precious …
Explanatory notes
… stones, whether or not worked or graded but not strung, mounted or set; ungraded synthetic or reconstructed precious … aluminium garnet (YAG), cubic zirconia (CZ) and synthetic moissanite, all of which are used to imitate diamond. … Vapour Deposition method (CVD), on the contrary, are mostly square or rectangular in shape, usually lacking …