The healing power of sound: Set of 7 crystal singing bowls for holistic balance and well-being Below is an overview of the sizes, tones, and qualities of the crystal singing bowls in this set. It is believed that each fundamental tone is connected to one of the seven main chakras. The sound of the corresponding crystal singing bowl is said to have an effect on the respective chakra. Crystal singing bowl 432Hz approx. 15.2cm (crown chakra, tone B) Crystal singing bowl 432Hz approx. 17.8cm (forehead chakra, tone A) Crystal singing bowl 432Hz approx. 20.5cm (throat chakra, tone G) Crystal singing bowl 432Hz approx. 22.9cm (heart chakra, tone F) Crystal singing bowl 432Hz approx. 25.5cm (solar plexus chakra, tone E) Crystal singing bowl 432Hz approx. 28cm (sacral chakra, tone D) Crystal singing bowl 432Hz approx. 30cm (root chakra, tone C) - Crystal singing bowl set made of quartz - Keys B-A-G-F-E-D-C - 15-30 cm diameter - All bowls with silicone ring - 2 carrying bags (black) - 5 felt mallets - 2 rubber mallets