SB-CQE10 10" Diameter Yellow/Solar Plexus Chakra Colored Crystal Singing Bowl With 9" Wooden Rubber Mallet and Rubber Ring Base Included. The crystal bowls are crafted from 100% frosted quartz crystal and tuned to 432 Hz. Made in China Min. 1 Each bowl is tuned to a specific note often used in sound therapy, meditation, and energy healing practices to promote relaxation, balance chakras, and facilitate spiritual growth and well-being. The 10-inch diameter Solar Plexus Chakra Crystal Singing Bowl is a captivating instrument meticulously crafted to harmonize and empower the energy associated with the Solar Plexus Chakra. With precision and artistry, this crystal singing bowl emits empowering tones that create a transformative and resonant vibrational experience.