Supposedly, it's bad luck for a person not born in October to wear an opal. That's how my mother inherited it - she was the only October baby!
I've been a few jewelers, and all of them are terribly impressed with the ring. The only problem (according to most of them) is that there is a limited market for opals, and none of them can afford to take it on.
I'm also going to unload an old wedding band, but I can pretty much take that to one of the gazillion gold buyers!