Sedimentary rock, mainly composed of clay, silt and dusty substances. The advantage of slate is its high resistance to weather conditions and abrasion. They are a very plastic material, which is why they are liked by interior designers and visual artists. It is most often used in its natural form, the so-called split, but some of its varieties can be grinded, polished, brushed or aged in special drums or made into the so-called Mushrooms. Depending on the thickness, slates are used to create tiles, floors, wall coverings, and finish terraces and balconies. The thickest slate elements are often used for paving garden paths and even roads.