How long have you had it?
And have you ever damaged it or had anything modified?
I've had mine 8 years. No intentional changes, but we were loading 2x4s in the truck, I was wearing those heavy leather work gloves and smashed my hand, and a stone fell out (mind you this is like 9pm in the home depot parking lot in the winter). Fortunately the stone was in the glove and I got it fixed no problem, I also got it replated, which I'm thinking it is due for again. And we replaced my wedding band, we bought the first one in a rush and the diamond chips were literally falling out (it was so cheap)!