I bought the small rhinestone logo earrings last June from the Rodeo Drive Chanel store. In the past 2 weeks, the stamp on the back of one, and a crystal from the other one have fallen off. Is there anything I can do about this? I live in Seattle, so could I take it back to the Chanel at Nordstrom? Or should I just spend the $200 on another pair. I haven't even had them a year and I barely wear them!