Pearl Nacre is delicate. It can begins to peel off if you do not take proper care.Do not use any harsh cleaners on your pearls.Never submerge your pearls in a cleaner, this is not good for your pearls or the silk on which they are strung.Cleaning pearls is very simple.Take a damp cloth with a little mild soap.Gently rub the pearls.Take a damp cloth and wipe them off.Lay them out to dry on another cloth. Do not put pearls in direct sunlight. Allow 24 hours for the silk to dry.Simple care of your pearls will allow you to enjoy them for many years.