The best ultrasonic jewelry cleaner will make your most treasured pieces sparkle like new. When’s the last time you cleaned your jewelry? If you hesitated for even a moment or two, it’s been too long.

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While ultrasonic cleaning might sound a bit like the “sonic shower” from Star Trek, this is actually one case where the futuristic-sounding technology predates its use in Sci-Fi. Ultrasonic cleaners ...