How To Clean Pearls And Diamonds. Never use an ultrasonic cleaner or soak in any solution, while pearls are fine to drench in weak soapy water, the glue, if there is some, might deteriorate being exposed to water. If the pearls are especially dirty, wipe the pearl with acetone polish remover.
Just dip the cloth in it and wipe the gems. Be very gentle not to damage the nacre (outer layer). Wet a soft brush or cloth with this solution and rub it gently against each pearl.
If your pearls are visibly stained, you can mix a solution of lukewarm water and mild dish soap, dip a soft cleaning cloth in it and wipe the pearls.
If they have yellowed and need extra boost of cleaning, use a damp cloth with soap and water and wipe.don’t soak vintage pearls! If they have yellowed and need extra boost of cleaning, use a damp cloth with soap and water and wipe.don’t soak vintage pearls! Let the detergent sit for a few moments and then use the brush again. Just dip the cloth in it and wipe the gems.