Harmony bells or Angel callers is what these are known as. Feel protected when you hear the soft, soothing chimes this necklace emits. This set is interchangeable with either the lava bead for your favorite essential oil scent or the harmony ball for its beautiful sound. This is a tradition in many countries that an expectant mother wears one and as she walks the harmony bell will sooth the baby with its delicate tones. Harmony ball pendant set includes the angel wing pendant, a harmony ball, lava bead, 31" silver plated brass chain.