Does gold tarnish? Pure gold does not, but alloys and plated pieces can. A karat-by-karat answer, how to tell tarnish from worn plating, and safe cleaning steps.
How to tell if jewellery is real gold: read hallmarks and karat stamps, decode GF and GP marks, use safe home checks and know when to get it tested.
Gold filled, vermeil or plated? What each term means under US and UK rules, how long each lasts, how to read stamps like 1/20 14K GF, and when to buy solid gold.