We bought a diamond engagement ring 2 days ago and today I noticed it has been chipped - it was not when we bought it. As I have hardly worn it and not done anything that I can think of that could have chipped it, what can I do now? Can I get the jeweller to exchange it or return our money? Is it possible that there was an inherent weakness that should have been told to us. I am so upset, can you please advise?