I got a spiny oyster, the whole thing, one side to be maybe some cabochons for some pieces and this half to be something with a tropicalisimo feel, resort beach or summer breeze.
Set in pure copper, a natural real no polished beautiful spiny oyster specimen half wrapped in torched wire with some glass and stone beads in turquoise blues. 
It is Ready to use, so just add chain on each side or beads and it would be a great young piece. :) 
It measures total 4 1/4 inches on top. (medium size -for my style-, wink)