These vintage glass hearts were made in Czechoslovakia in molds during the 1980s. The heart is 16 mm from hole to hole and 15 mm wide at the widest point. The bead channel is small and will accommodate up to a 0.5 mm string. The color of these is light, sapphire blue. They are transparent and do have a few glass bubbles in the heart. Price is for 10 beads.