hi, sorry for taking so long to reply. I have been very busy this week and no time.
They call it Cystral bowl meditation or sound bath meditation. I do it at a place in Caulfield South in Melbourne. Just google Sound bath meditation in Caulfied south for those that live in Melbourne.
They hit crystal bowls and metal (Tibetan) bowls and they make a noise and the vibrations from the bowls go through your body, very relaxing and healing they say.
Last nite I had a sound bath massage with the metal bowls, amazing as you they put the bowls on your body and tap them and the vibrations go through you more strongly then in meditation. But I must say I love the sound of the crystal bowls more in meditation.
I did google crystal bowl meditation on youtube and found heaps of meditation clips using the bowls. There was one particular one I loved with rain in the background.
Hope you all get some enjoyment and therapy out of it if you try it.
Veronica