The Ceppo di Gre of the Monte Clemo series is a porous, naturally occurring gray-blue premium cloudy breccia bonded together by a fine-grained matrix, consisting of large and smaller vivid blue-gray stones, contrasting with lighter and warmer grays, from light to dark tones, with debris varied and irregularly distributed in form and size, each slate is unique, with a retro and industrial beauty, exuding an elegant and charming temperament.