The works of CaCO3 appear as moving and undulating surfaces, in which the tesserae are of glass, sometimes coloured, gold leaf or marble. These small pieces in the first case start from a sheet of glass which the artist hand cuts small ‘strips’ which are then arranged and placed one at a time into a layer of wet cement mortar, mixed with oxide to obtain different chromatic shades. The tesserae may be arranged in many different ways and can themselves be different from each other; perhaps in the case of the glass, slightly undulating. Their varied appearance, due to the changes in the inclination with which they are set into the cement is able to generate numerous effects, of movement, of rotation, of modularity, of pulsation; for this reason CaCO3 mosaics often have optical values, experimenting unsuspected kinetic dimensions and an idea of dynamism thanks to particular compositional and technical procedures. Movimentio, uses glass that has 24 carat gold applied to the surface to one face of the glass and is arrange to present an ombre effect before sandblasting. As the viewer passes the artwork they are rewarded with a dynamic viewing experience.