Cantera Gris Escorial is a porous and lightweight stone formed by volcanic ash and combined with the lava, dirt and stone on the ground already. This stone is especially good for Building stone, fireplaces, stairs, sinks, monuments, pool coping, sills, ornamental stone, mosaic and other design projects. It also called Cantera Escorial,Gris Cantera Escorial,Cantera Gris Escorial . Gris Escorial Cantera can be processed into Sawn Cut, Sanded, Rockfaced, Sandblasted, Bushhammered, Tumbled, Thermalled, Natural Cleft, Weatheredge and so on.