Explanatory notes
… these stones, which are usually crystalline, are used by jewellers, goldsmiths and silversmiths for making articles … therefore mainly stones intended for mounting or setting in jewellery or goldsmiths’ or silversmiths’ wares; but, … cups, statuettes and ornamental goods of jade, ashtrays and paperweights of agate or onyx, rings for fishing rods, etc.; …