Wuyou 8inch + 10inch 2pcs set crystal singing bowls are produced by high purity quartz crystal, the purity more than 99.99% and produced at least 1800 degree. We have professional technicist and machine to produce the bowls, then they will be tested to determine the musical note. Music bowl is a kind of music instruments can be used for treatment, which helps practitioner to clarify the mind in order to achieve a state of deep meditation. All the singing bowl are made of high purity quartz crystal, they naturally contain the ability to energize, clear and enhance the energy in any environment, making them incredibly resonant. The quartz crystal singing bowls include white and colored. The bowls match chakra and chakra sets. A rich resonant tone exude from these crystal singing bowls by sticking gently or rubbing with the accompanying mallet. These tones move through our body in vibrant waves, calming, aligning and healing our energy centers. Growing medical research is validating the powerful use of these bowls in balancing and healing the human body, mind and spirit. The crystal singing bowls are associated with the musical scale with C, D, E, F, G, A and B, these notes are in turn associated with the seven chakra of human body. Size: 12 x 12 x 11.