Transparent Glass Cabochons, Heart, Clear. Size: about 10mm long, 10mm wide, 3.5mm(Range: 3~4mm) thick. Crystal clear glass cabochons magnify designs and patterns when placed on top of paper or fabric. Best used with earring, cuff link, ring. And buy this 200 pcs Heart Transparent Glass Cabochons For $3.38 @PandaHall.