Pietra Serena is a grey coloured sandstone especially used in historic Tuscan architecture and, specifically, in Florence. Today, due to its even colour, this stone is specifically used and appreciated in minimalist modern architecture: smooth, even surfaces, pure masses that bring to life warm and timeless spaces, easily matched with other materials. The versatility of the material, processing easy, mechanical resistance to the weather and wear satisfy the designers needs in both aesthetic and performance terms.