Thomann Crystal Singing Bowl CCC 7"

I bought these clear crystal bowls for test, since I have been really happy with Thomas Tibetan bowl series. These came well packaged with really sturdy travel case. Tone B is from 3rd octave if anyone is interested. Bowls were also beautiful looking. Sound with even slight touch is sharp and clear, more my taste than regular crystal bowl. However all of these bowls are extremely thin. Thickness is barely 2mm, which is really little for even these type of bowls. Bowls are extremely light weight, only half weight of same size/note Meinl clear crystal bowl, which cause that even tiniest touch from mallet makes the bowl loose it balance little. I'm really struggle to decide keep these or not, I really like to look and sound of them, but they feel so fragile that I'm afraid to use them.