I bought a Diamond Dazzle Stik and was delighted to find how beautifully it cleans diamonds....it's equally as good as when my jeweler cleans my rings....you say it cleans precious stones and indeed it does a fabulous, easy job on them.....but you didn't say anything about using it on fashion (costume) jewellery. I am a fanatic about rings. I have a few nice diamond rings, but my collection of some 60 "fun" rings cleaned up BEAUTIFULLY with my Diamond Dazzle Stik! Thanks so much for this product; it does not disappoint!