This item includes one Singing Bowl Sound Certificate. In order to receive a certificate this must be purchased with the bowl that needs the certificate. If you purchase multiple bowls please make sure to purchase the same amount of certificates or notify us in the notes section of your order which bowl(s) you would like certificate for. If the bowl that needs the certificate was previously purchased from Silver Sky Imports please make sure to include the item number in the notes section of your order.The Singing Bowl Sound Grading System is the best comprehensive process to grade the sound character of each individual Tibetan Singing Bowl. The grading system includes a variety of live tests on each individual bowl. By using modern software technology and the human body to grade each individual bowl based on its true sound quality. The system tests a combination of many factors such as the harmonics, frequencies, resonance, how easily the bowl sings, and the way each bowl generally affects the body. This is especially important for those interested in meditation and healing with the bowls.
The grading system includes a score based on a simple scale between 0 and 100. A bowl graded with a score of 0 would be the lowest quality in sound and resonance. Bowls with a score under 80 vary from below average (40 and under), average (40 to 60), and above average (60 and up) sound quality. Any bowl graded from 80 to 100 are among the highest quality available anywhere are best suited for healing and meditation.
In addition to the score the highest quality bowls may receive an additional score of Healing Grade and Master Healing Grade. These bowls are selected based on the sound healing characteristics that each bowl creates. Only the larger bowls with the lowest frequencies and harmonics are even considered. When struck, the Healing Grade bowls are guaranteed to vibrate well over a minute and the Master Healing Grade bowls well over 3 minutes. These higher graded bowls also have the ability to alter states of consciousness and affect emotional and physical healing aspects of the body. A certificate of quality is available for Master, Healing, and Meditation graded bowls at a cost of $5.00.
