Only use jewelry cleaners labeled as safe for pearls. Never steam clean pearls or use an ultrasonic cleaner, and avoid exposing pearls to detergents, bleaches, baking soda, or ammonia-based cleaners.

Jewelry with clean lines and fewer edges may not get as dirty as quickly. It depends on which stone we're talking about. You want to avoid the ultrasonic cleaner in some cases; Certain gemstones ...

Grease can be removed by dipping the jewelry in rubbing alcohol. After cleaning and rinsing, be sure to dry and polish it with a chamois or a soft cloth. An ultrasonic cleaning machine can also be ...

and therefore should not go in an ultrasonic cleaner," she says. Luckily, she says that despite this, you can perform a basic, safe cleaning for most gemstones in a similar manner. She states, "for ...