I'll post a pic of it as soon as I get home, but it's not a C clasp - it looks kind of like a 6 with a mechanism to open it like a C clasp. Sorry if that makes no sense. Happy bidding!
Since it won't let me post a pic of the clasp I looked it up - it's a lobster claw, and it's bronze. It doesn't really match the necklace, but it's in good working condition.