Have used previously ultrasonically. Works great!
I really liked this product because you can use it on ANY jewelry ( although I haven’t tried marcasite because of the liquid properties) so I bought it again. It is not chemical I believe and does not harm pearls or costume jewelry ( fashion) yet you can do gold and diamonds.<br />  I clean quite a bit of jewelry. I still recommend a silver polishing cloth( jewelry polishing cloth) for most silver to keep the natural beauty of the oxidation, or “ tarnish” that is sometimes intentionally put there. This is very gentle on silver though, unlike the dips and cleaners that strip away the beauty of the silver.
Rating: 5 stars