The MEINL Sonic Energy 8" root chakra crystal singing bowl emanates long-lasting, spherical tones from its high-purity quartz construction. You'll sense a pleasant aura as the singing bowl's resonance spreads through your space when gently tapped or rubbed. Included is a silicone ring that protects the bowl while allowing its tuning of A4/a' = 432Hz to ring clearly for chakra healing, meditation, sound therapy, yoga, feng shui enhancement, emotional centering or simply aesthetic ambiance. If you're seeking an aural design element, this singing bowl's versatility and purity of tone create an uplifting environment.