Meinl PCSB12E Sonic Energy Planetary Tuned Crystal Singing Bowl - 12" (Earth Year/Om)The white frosted Meinl Sonic Energy Planetary Tuned Crystal Singing Bowls are made using the calculations of Hans Cousto (The Cosmic Octave) to match the frequencies of the sun, moon, and planets. Each one is tuned to produce the corresponding frequency of the celestial body. These white frosted singing bowls made of high purity quartz create a very pleasant aura with their sound and design. Their long lasting, spherical tone spreads when the singing