If your jewelry isn’t looking as shiny as it used to, this ultrasonic cleaner could revive it in as little as five minutes. It uses high-frequency sound waves to clean items with plain tap water. However, in addition to jewelry, it can clean eyeglasses, makeup brushes, dentures, retainers and watch straps.

“I am very happy with it!” said one reviewer. “It’s compact, easy to use and works extremely well. I used tap water with just a few drops of dishwashing liquid, and my diamonds were absolutely sparkling. It’s a quick, easy process. You can see the dirt in the water when complete. Just dump the water out and dry the inside of the unit with a paper towel and you are all set for your next cleaning cycle.”