The standard specifies a limited number of colours of gold alloys. By specifying a range of gold alloy colours, this standard enables a corresponding range of polished gold colour slips to be produced for comparison purposes for use in routine transactions between manufacturer and purchaser. It applies to jewellery, and to watch cases and accessories made of gold alloys or watch cases and accessories with gold alloy coverings.
DS/EN 28654:1993 history
1993DS/EN 28654:1993 Colours of gold alloys. Definition, range of colours and designation