Jewelry, costume and fine pieces too, can become trashed quickly. This $28 when-new bracelet that was horribly tarnished, was given to me by a friend. Gold-toned items can be restored with ketchup and Blue Dawn.
Cover your tarnished item on both sides with ketchup. Wait 5 minutes and rinse off. You will see a marked improvement. Then put a few drops of Blue Dawn in a bowl filled with warm water. Dip your item in it. Wash off gently with your fingertips and dry.
Enjoy your good-as-new piece!