Instruct: Classify the given review into positive or negative sentiment.
Query: The stone fell out!

I was SO excited about how beautiful the ring looked when presenting it to my daughter for her 18th birthday. Three days later she called me tearfully at work saying that the center stone had fell out (luckily she was able to locate it with the help of her friends). I haven't been able to find out how to get it replaced, but I'm very disappointed!