Crystal: Made of high-purity crystal over 99.99% for clear and long-lasting tones. Sound: Produces deep, strong vibrations with healing power; sound is clear and sustained. Usage: Place bowl on rubber ring on flat surface or hold in hand; tap rim and guide striker around edge. Benefits: Helps clear mind, increase positive intentions, and balance energy centers for and yoga. Accessories: Includes acrylic striker and O-ring. Professionally packed; damage in transit is covered.