According to Nice classification heading for class 14 states Precious metals and their alloys; Jewellery, precious and semi-precious stones; Horological and chronometric instruments are include in Class 14. The heading gives you a brief broad overview about what exactly is including in a particular class.
Class 14 includes mainly precious metals, goods in precious metals not included in other classes and, in general jewellery, clocks and watches. This Class includes, in particular: – jewellery (i.e., imitation jewellery and jewellery of precious metal and stones); – cuff links, tie pins. This Class does not include, in particular: – goods in precious metals classified according to their function or purpose, for example, metals in foil and powder form for painters, decorators, printers and artists (Cl. 2), amalgam of gold for dentists (Cl. 5), cutlery (Cl. 8), electric contacts (Cl. 9), pen nibs of gold (Cl. 16), teapots (Cl. 21), gold and silver embroidery (Cl. 26), cigar boxes (Cl. 34); – objects of art not of precious metals (classified according to the material of which they consist).