The Alex and Ani website recommends using their signature polishing cloth made from 100% cotton flannel to clean their pieces effectively. Polishing cloths are multi-use, so you’ll be able to clean all the jewelry you’ve collected that’s looking a little worse for wear.
Make sure your cloth is soft to the touch and has no abrasive elements. An overly abrasive cloth can leave small scratches on your jewelry.
Jewelry with elements like rafaelian (eco-conscious matte silver or gold) might need the extra wash even after using a polishing cloth. Plus, a toothbrush makes it easy to get between cracks and crevices. No more nasty build-up in hard-to-reach places!
Vinegar is too abrasive for use on jewelry with materials like pearls, tortoiseshell, amber, ivory, or jet.
Ultrasonic baths are not safe for use on delicate jewelry containing pearls, tortoiseshell, amber, ivory, or jet. [6] X Research source