How To Clean Gold Jewellery With Diamonds. Apply this paste to the jewelry and clean it using a brush or cloth. Place the jewelry in the mix for a few minutes.
Get A Baking Dish Instead, an easy, DIY cleaning method using mild dish soap and warm water is a gentle yet effective way to keep gold clean. While dish detergent and warm water is the best homemade jewelry cleaner, there's no substitute for visiting your jeweler for a cleaning. Don't use a polishing cloth (or any kind of polish), ammonia or baking soda to clean your gold plated jewellery.
Pour some soapy water in a bowl.
Pandora charms are also safe to clean this way.
After a half hour, take the diamond out and scrub the diamond with a soft bristle toothbrush. Rinse, dry with a soft towel, and lay out on a soft surface to dry. Afterwards, take your jewelry out of the bowl and scrub it clean with a soft-bristled toothbrush.