A designation, within the meaning of the Precious Metals Control Act, must correspond to the actual precious metal content of the articles.
All designations and quality indications likely to mislead the consumer are prohibited.
A precious metal article must bear a standard mark and a maker's mark. A mixed metal article must also bear an indication of the base metal used. For plated articles, the manufacturer has the choice between traditional marking (e.g. Plaqué G) and recent marking (e.g. P 20 or GP 20). In both cases, the presence of a maker's mark is required.
For imitation gold articles, the list of prohibited designations is longer than that of accepted designations.