Brass is an alloy of copper and zinc and will naturally tarnish when exposed to oxygen.

Over time, the brass material will become dull or tarnish a bit. Not to worry, this metal is easy to shine up and make look good as new!

Best natural way to clean your brass pendants/components is ketchup! Apply it on and let it sit for up to 15 minutes, clean it(you can rinse it with water, polymer clay will be fine-studs and connectors are all of stainless steel) and dry thoroughly.