I ordered this silver cleaner for spiffing up some Blue Box jewelry that is very intricate, so a thorough polishing is very difficult. I opened the jar and the plain liquid inside belies the incredible power of this stuff. I put the first item, a delicate necklace (chain + charms + jewels) into the little basket and dunked. Almost immediately I pulled the basket back up because WOAH, did it do the trick! No kidding, restored that beautiful sterling piece back to the way it looked the first time I saw it at the store. This stuff is fan-freaking-tastic. The jewels are fine but as the jar warns, don't use it on anything porous (i.e. pearls or soft stones) and I'd avoid touching the liquid as much as possible: like the other post mentions, it is carcinogenic (see label). Wash the cleaned piece and your hands with soap and warm water! I highly recommend this product. It's better than I expected, and I am a perfectionist with overly high expectations at times.