Picture below the cut, in case you need a visual.
The clasp part is at the top and was a bent piece of metal. It snapped off at the bend
Apparently, the magic word is 'vintage bronze' - the second I say that, everyone starts sounding wary. Currently bidding on the necklace, as there are three on ebay. And a really hideous ring that matches. I'm weirded out though that I can't find another bracelet like this though.
Added picture of clasp. Yes, I should have added a pic of the clasp. I blame the universe.