Opals are in a class of their own, each one is individual. They are the most delicate gems commonly worn and require special care. Opals should be cleaned with a very soft brush or cloth with a little warm soapy water and can easily chip or crack if knocked therefore it is imperative not to wear opal jewellery when doing manual work such as housework or gardening. If unworn for long periods of time, opal jewellery should be stored in a sealed bag with a damp cloth. Dry air conditions can crack or discolour the stone. Opal triplets and doublets should not be immersed in water