Pandahall 5 Sets 40x30mm Clear Oval Domed Magnifying Glass Cabochon Cover for 40x30x3.5mm DIY Golden Brass Photo Cabochon Making, Cabochon Setting Size: Cabochon Setting 40x30x3.5mm; Tray: 30x40mm Finish: Lead Free & Nickel Free Metal Color: Golden Shape: Oval Material: Brass + Glass