PEPPERLONELY Brand 10 Sets Antiqued Bronze Cabochon Frame Setting Tray Pin Back Brooches with Clear Round Glass Dome Tile Cabochon 25mm (1 Inch) Quantity: 10 Sets Size: Brooch: about 26mm in diameter hole: 2mm pin: 0.8mm; Tray: 25mm; Glass Cabochons: 25mm in diameter 7.4mm thick. Nickel Free Paste pattern or put some tiny beads in the tray then cover with the clear glass cabochon a unique brooch will be finished.