Precious metals and their alloys and goods in precious metals or coated therewith not included in other classes; jewellery and imitation jewellery, gemstones, precious stones; semi-precious stones; diamonds; cufflinks, watches, clocks; horological and chronometric instruments; parts and fittings for all the aforesaid goods, table plates of precious metals, works of art of precious metals, ashtrays, ornamental boxes, pens, bibelots, centerpieces, statuettes, vases, cups, and animal or plant shaped bibelots, all these goods made of precious metals or coated therewith