The Natural Collection presents the Basalton in its natural form. Basalt Orvieto is an effusive rock of volcanic origin, dark gray in color with white intrusions. It takes its name from the area where it is mined, Orvieto, in Umbria. This stone, particularly used for outdoor settings, is found in countless historical applications for paving, walls, and street furniture, but in more recent times it has become more widely used in interior applications, furniture complements, and tops.