1.2mm long 16″-18″ silver snake chain for fused glass jewelry pendants. Extender attached. High quality. Plated Components: The silver plated chains & settings are double silver plated over copper base metal. This is the best quality silver plated components you can purchase. In order to ensure the beauty of the these pieces for you, proper care must be given. Did you know it is the open air that causes tarnishing and pitting on plated components? Sulfur and other airborne chemicals are the main cause of tarnish and jewelry tarnishes much faster if it’s left out in the open than if it’s stored away in an acid-free, closed container or air tight baggie. If the findings are left out in a display case for long periods of time and not put away nightly or not put away after wearing, they are likely to tarnish more quickly. Excessive tarnishing will then cause pitting. All of this can be avoided by placing your settings or finished jewelry in airtight baggies when not in use. However, all silver needs to be polished once in a while…we suggest a jewelry polishing cloth and not the use of harsh chemicals such as Tarnex.