clear glass cabochon, flat base with domed top round,drop,rectangles,heart,square,oval shapes custom sizes clear glass cabochon,one side domed ... is with two flat sides. Following are existing sizes we have,we can also produce custom sizes.round glass cabochon: ... ,50mmdrop glass cabochon:13*18mm,18*25mmsquare glass cabochon:12,15,20,25,35mmrectangles glass cabochon:19*38mm,21*31mmheart glass cabochon: ...