To clean your necklace, wash it in warm soapy water (or just wear it in the shower). Ark & Armor pieces were designed to look rugged, so don't worry if you notice your necklace antiquing slightly over the years. Make no mistake, our necklaces are waterproof, sweatproof, tarnish resistant, and built to last a lifetime (learn more here). Still, all metal can naturally tarnish when exposed to common everyday items that contain sulfur, such as leather, rubber, chlorine, cleaning products, saltwater, and even air pollution. We think our necklaces look best with some character, but if you decide you want to keep your piece looking bright and new, simply polish it with a silver polishing cloth.