The base material is pure granite, which is crushed by a mineral mill and ground into grain fractions of different sizes. In order to make the granulate mouldable, we mix it with active 3Quellen water (see www.denk-aqua.de), among other substances, and also add effective microorganisms (EM) in the form of yeast cultures. The EM grow together with the granite powder in an aging process that lasts several days. It becomes malleable and workable as a result, almost like ceramic clay.