Blister Pearl Iridescent Shell Pendant

Gorgeous, Iridescent natural Mother of Pearl Shell pendant. It's a baroque blister pearl in the center, which is a attached, not fully formed pearl, which is attached to the shell. I've never seen any pendant quite like this! It's very simple and classic in style, but it's OOAK unique. Such a special unisex shell pendant! The light metal frame is gold-tinted metal, and I have no idea what kind of metal it is. In excellent vintage condition.