Home Cleaning & Annealing for the Adventurous (Click images to enlarge)
If the bangle gets stiff, it can be softened again and cleaned at the same time by using the kitchen stove and 5% white vinegar.
Simply select a gas burner (NOT ELECTRIC) and set the flame to the same size circle as the bangle. Set the bangle on the burner grate and heat for one minute—the metal colors will change, but it should not glow! The bangle may smoke or flame a bit but that’s okay.
Pour 1-inch of vinegar in a small saucepan and, with metal tongs, lift the bangle from the burner grate and set into the vinegar. It will whoosh and steam and should then be clean and soft. You may scrub it a little with a toothbrush and toothpaste, but DO NOT USE metal wool or polish! Dry off and wear.