mh originals jewellery is fun and easy to wear, and generally maintenance free. All pieces are made using sterling silver, 9 carat gold, freshwater pearls and Swarovski crystals. To protect your new jewellery from tarnish we advise storing it in a cool, dry place, keeping it with the anti-tarnish paper which has come with it. Jewellery should be put on after perfume and creams. We do not advise sleeping with your jewellery on, nor exposing it to water.