HQ frosted crystal singing bowls feature the classic design and appearance of our regular frosted quartz crystal bowls with a redesigned outer surface much smoother than the outer surface of traditional frosted crystal singing bowls. The difference is apparent in the playing of the bowl. The exterior of the bowl has a refined playing surface, which retains some texture, while removing the sand like grit. The result is a smoother sound with less striker noise. The surface is very responsive to both classic suede striker tools and rubber ball tools alike.