Have you ever wondered exactly what gunmetal jewelry is made of? I design and make jewelry like the earrings shown here. When I opened the drawer of my gunmetal components some had a green corrosion on them. I started to throw them away but thought perhaps I could find out if they could be saved. I snooped around some to see what I could find out about what gunmetal actually is and if it can be cleaned.
Gunmetal jewelry is an alloy of 90% copper and 10% tin. Gunmetal also refers to a blue-black finish caused by electroplating a coat of iron on an item and coloring it in a chemical solution. Electroplate is a thin coating of metal applied to the outside of a base metal through an electrical process. The item is suspended in a chemical solution and current flows from a piece of metal to the item depositing a layer of metal onto the item.
So how does one clean gunmetal jewelry you ask? Believe it or not, it is very easy to do with an everyday object. A pencil eraser! Yes, it is true. Use a pencil eraser to rub away the corrosion on your gunmetal items and it will disappear!
I hope you find this tidbit of information helpful in cleaning any of your gunmetal jewelry.