Instruct: Classify Amazon reviews into positive or negative sentiment
Query: It's a Chinese knockoff - BEWARE

This ring is a ripoff of ring made here in the U.S. by Edward Mirell. It's absolutely identical, but not the real black titanium that Edward Mirell uses and that their parent corporation has the patent on. So beware - the black WILL come off pretty easily as it is only plated. It's a shame that Amazon sells knockoffs, and that Edward Mirell is powerless to stop them.