... round,drop,rectangles,heart,square,oval shapes custom sizes clear glass cabochon,one side domed,one side flat, can be used ... sizes we have,we can also produce custom sizes.round glass cabochon:8,10,12,14,15,16,18,20,25 ... ,40,50mmdrop glass cabochon:13*18mm,18*25mmsquare glass cabochon:12,15,20,25,35mmrectangles glass cabochon:19*38mm,21*31mmheart glass cabochon:16mm ...