13x18mm Oval Transparent Glass Cabochons and Iron Flower Finger Ring Components Alloy Cabochon Bezel Settings for DIY, Antique Silver </br>Size: </br>Ring: about 17mm inner diameter, 23mm wide, 29mm long, </br>Tray: 13x18mm, </br>Glass Cabochons: 18mm long, 13mm wide, 4.5mm(Range: 4~5mm) thick.