Soft stones such as opals should not be cleaned using Soda Crystals. Liquid Bicarb cleans hard surfaces including aluminium, chrome, plastic, porcelain, silver, stainless steel and tin without scratching. Simply pour it on to a microfibre cloth and gently wipe over the surface.
How do you use baking soda to clean silver?
How to Clean Silver with Baking Soda
Why does baking soda and tin foil clean silver?
Cheaper too!! You can easily clean silver with aluminum foil, baking soda and hot water. Thus method uses electrolytic action instead of chemical- polish abrasion and removes the tarnish from oxidized silver without removing any of the underlying metal…. The usual tarnish on silver is the black sulfide.