Under the Trade Descriptions (Marking) (Gold and Gold Alloy) / (Platinum) Orders, all articles made of gold, gold alloy, or platinum must bear a mark indicating the fineness of gold or platinum content in the form and manner specified. Articles made of different parts of gold or platinum of different fineness, or partly of gold or platinum and partly of other metal must be clearly marked.

If an article with a surface treatment of gold or platinum is marked with words describing such treatment which include the words 'gold' or 'platinum', the other words in such a description must not be less prominent than the words 'gold' or 'platinum'. Gold or platinum articles sold must be accompanied by receipts or invoices giving details of the article supplied, including the description of the article and the fineness mark. Traders and suppliers are also required to display the notices specifying the legal requirements at the point of supply.