To keep your Jewellery dust and dirt free, and to prevent unwanted oxidation or tarnishing, store your pieces in a Jewellery box with the lid closed (or a zip lock bag). Wrapping your Jewellery in a soft cloth will also keep it clean and prevent it from oxidizing. Wrapping your pieces individually will prevent scratching. When metal oxidizes, it turns darker in color. This is a natural process. If your piece was purposely oxidized to give depth and character, be careful as cleaners will remove this process. High humidity will make oxidation happen faster and, of course, individual body chemistry is a factor too. If you have any skin sensitivities or discolorations, don’t worry because it will wash off with a little soap and water.