The Crystal Singing Bowlsare made of the highest quality(99.992% pure!)quartz crystal, making them incredibly resonant. The tones produced by crystal bowls are not just heard by the ear, you feel them in your body, with certain tones affecting your energy centers (chakras) for healing, balancing & meditation.
Crystal Tones Singing Bowl are made with a unique, patented manufacturing process which is available ONLY with the Crystal Tones Singing Bowls. This process makes our bowls strong and incredibly pure in tone.
The Crystal Singing Bowls are made ONLY with pure quartz crystal and the finest in gemstones and precious metals such as 24 karat gold, silver and platinum.
Content Source Credit to www.crystalsingingbowls.com