Pearl Cleaner How To Clean A Copper/pearl Necklace Without Damaging Pearl?

How to clean a copper/pearl necklace without damaging pearl? - pearl cleaner

I have a necklace, a particular problem has to be made with copper and pearls. The structure consists of a cast copper replicas of grooved shell, freshwater pearls, with small, filled with a cord and without complications.

Seeking a solution that could help to eliminate the oxidation of copper in order to cover all the fine detail without damage to the beads. All the solutions I looked on the Internet, said by some acidic substance, such as damaged salad dressing or sauce Worcestshire but pearls are acid. Does anyone have an alternative?