I just sold some this past week. Thanks to another thread here on the DIS I used US Gold Buyers. They are based in Manhattan and you can walk in to their office weekdays if that's an option for you. I just send in 3 broken necklaces (lightweight, which is why they broke), 2 charms, and 2 rings. I took them to a local place and they offered me $203. US Gold Buyers called me with an offer of $439 which I happily accepted.

I Fedexed the items to them on Monday (on their dime), got the call from them Tuesday and had the check in hand on Friday. I couldn't be happier with their service. I think the other thread was "WOW! I just sold my old gold" if you want other references.