Different from diamonds, pearls are very vulnerable to liquids that contain chemicals. Such as hairspray, nail polish, or ammonia. The liquid will easily ruin your pearls.

How to care your pearl is actually very easy. Wipe your pearls after use. Use a soft cloth. For maximum results, wet the cloth with soapy water, wring it out, [...]

Ring or diamond earrings must be treated by brushing on a regular basis at least six months in order to maintain sheen. Do it in a diamond shop that provides this service.
If you want to do it yourself, this method can be practiced. Prepare a warm water that had poured dishwashing liquid. Dip your diamond [...]