This amazing exfoliating foot stone is made from Orsa Sandstone making it 100% natural way to give the perfect peeling / scrub / exfoliating product for your face! Orsa Sandstone gently removes dead skin cells, the grains are very fine and it can be used daily or as needed. ABOUT ORCA SANDSTONE Orsa Sandstone originates from Dalarna in central Sweden. The stone is 360 million years old and consists of silicon-bonded quartz. The sandstone is primarily used as building blocks, millstones and grinding stones due to its unusual abrasion resistance and long-lasting durability. The sand grains in the stone are so delicate that the sandstone is also used for nail files and foot files. Both types are sustainable and extremely durable.