The MEINL Sonic Energy 440Hz heart chakra crystal singing bowl offers a soothing, resonant tone tuned to the heart chakra frequency. Crafted from high-purity quartz, this singing bowl produces an extremely long-lasting, spherical tone that spreads pleasantly throughout your space when gently tapped or rubbed. You receive a protective silicone ring to prevent impacts and optimize resonance. Available in diameters of 12", 14" and 16", this versatile singing bowl can be used for chakra healing, meditation, sound therapy, yoga, improving feng shui, adjusting your emotional state or simply as an aesthetically pleasing room decoration.