Stunning silver and labradorite Bola necklace with stainless steel chain 75cm. Inside this beautiful silver plated pendant is a brass bell which makes a soft chiming sound as it moves. For pregnancy? A Harmony Ball is essentially a chime pendant worn primarily as a pregnancy necklace, a lovely piece of jewelry originating from Bali in Indonesia. As the name implies a Harmony Ball can bring a sense of calm and harmony to the wearer as the pendant emits a soft but just audible chime sound with movement, creating a relaxing effect in a similar way that the sound of a rippling brook or small waves gently lapping the shore is relaxing. A harmony Ball is also known in Mexico as a Bola (Spanish for Ball) or Harmony Necklace or Pregnancy Necklace. This jewellery does not neccesarily need to be worn during pregnancy. Chain length 75cm. Stainless steel is a hypoallergenic metal therefore it will not rust or turn green. Silver plated pendant - 100% lead and nickel free.