Goldsmiths' and silversmith's services, included in class 40, in particular gold and silver working, gold and silver plating, gold plating, silver plating, treatment of materials relating to jewellery and goldsmith's and silversmith's services and/or reworking of jewellery, in particular metal treating and hardening, and treatment of materials for surface finishing and/or cutting of gemstones; jeweller's services, included in class 40, in particular processing of precious stones, engraving, p...