Avoid encounters with mermaids, underwater things and archeology projects. Fun as they sound, they can harm or scratch your rings and gemstones. The black plastic jewellery can be washed with mild soapy water if they get dirty. For the steel jewellery, better use a mild polishing cloth, they will sparkle right up! Fragrances, hand creams, sanitisers, and lotions can contains all sorts of stuff so keep your jewellery away from all that alchemy.