When your jewelry is a little dirty, you don't have to think it's bad anymore. LOOK: Jewelry stores rather you buy something new, but most pieces are timeless. A good wash and a shine, and most pieces can look like new. Drum roll please.. Here are 6 jewelry cleaning secrets that jewelry stores rather you didn't know. I use all these secrets myself and especially love number 3 and 4. (Don't cheat and look ahead.) The Jewelry Cleaning Secrets 1. Good Old Dish Detergent : Cleaning gold jewelry is actually best done with some simple dish soap. Take a few drops of standard dish detergent and empty them into a bowl of warm water. Hot water can be dangerous to precious stones. Soak the jewelry for about 15 minutes. Pull them out and scrub them with a toothbrush. 2. Kick It Up a Notch With Club Soda : For your gold jewelry you may need something more powerful. If the warm water solution doesn't work, use simple dish cleaning detergent. If that doesn't work use club ...