Just unpacking a new shipment of buttons. This very large button 1 5/8 inch (41mm) has the pinwheel design. It is molded in transparent aqua glass. There is a silver mirror coating on the back. and the front has colored painted highlights. There is a metal loop shank in back. I have many of this style of button. If you want more than one just let me know and I can set up a special sale.