Unique robot necklace

This dangly robot is super cute and has shiny colored gemstones on its crown and body. The back has clover shaped cutouts. I would describe the color as "dark silver" or "antique metal". The metal part (body and chain) has kind of a rough texture. The necklaces hangs about 17.5 inches when I measure from top to bottom in the last photo. The robot itself is about 2.5 inches tall. Please see the photos indicating the parts where color has worn off from the arms and legs of the robot.