~18k Gold filled chain ~2" adjuster ~Lobster clasp closure Gold filled Gold-filled jewelry is made by mechanically bonding a layer of gold, at least 5% of the item’s total weight, onto a base metal. Because of the mechanically bonding process, gold-filled jewelry does not rub off, and it has 100x more gold than gold plated. Gold-filled jewelry waterproof, tarnish resistant, and great for sensitive skins. To care for gold-filled jewelry, use a sold cloth to remove and dirt of oils after each wear. Store your jewelry in a dry, airtight container or jewelry box, to prevent tarnishing and scratches. Avoid harsh chemicals such as: perfumes, lotions, cleaning products, chlorine, etc.