Piasentina StoneGrey limestone from Italy. It has the best ratio of maximum allowable load to minimum wear; it does not show visible signs of wear on claddings even after decades of use.
- Compression tensile strength: 1764 Kg/cm²
- Unitary modulus of bending tensile strength: 242 Kg/cm²
- Heat expansion coefficient: 0,0022 mm./m. oC
- Mass by unit of volume: 2690 kg/m³