Singing bowls are often utilized in the course of sound therapy. One type of bowl are also known as quartz singing bowls or glass singing bowls. Various alternative health practitioners believe that the use of these bowls can have a significant beneficial effect on the healing of your mind and body, especially when combined with positive affirmations in the form of mantras and chants. One of the reasons for the use of crystal singing bowls is the belief that our bodies are made of crystalline structures.