Made of high-purity quartz with a clear, deep, and harmonious tone Tuned to 432 Hz – natural resonance for relaxation and harmony Lightweight, handcrafted, and comfortable to hold The Meinl Sonic Energy Essence Crystal Singing Bowls are made of high-purity quartz to create a pleasant aura with their sound and design. Their long-lasting tone spreads outward by gently tapping or rubbing, filling your surroundings with an ethereal tone and calming positive energy. Our Essence Crystal Singing Bowls are characterized by a distinctively clear, rich, and deep sound that can send the player and listeners into a relaxed state. These instruments are lightweight and easy to hold. With their intricately handcrafted shape and specific tuning, the bowls may vary slightly in height to be perfectly in tune. You can use our crystal singing bowls for a variety of purposes: Relaxation therapy, chakra healing, meditation, physiotherapy, sound therapy, yoga, adjusting your emotional state, or even for room decorating. This crystal singing bowl is tuned to 432 Hz, often called "natural pitch" due to its resonance with nature and the human body. Many believe this frequency promotes a deeper sense of relaxation and harmony. The bowl comes with a white silicone ring, a Suede Mallet Rod (CSBSMM), and a sturdy carrying bag.