Liquid cleanser for jewellery with pearls and semi-precious stones 236ml will quickly remove impurities from delicate jewellery with semi-precious stones and bring back its shine. This liquid cleanser is ideal for cleaning pearls and minerals, from onyx through amethyst to turquoise. Just put the jewellery in the tray and dip it in the liquid for 30 seconds. Then just clean the jewellery with lukewarm water, dry it and wipe it using a microfibre cloth.