1) Density: 2.69g/cm³ 2) Water absorption: 0.36% 3) Compressive strength: 153.8MPa4) Modulus of rupture: 12.8MPa5) Hardness: Hs=90.56) Acid resistance: 98.90% 7) Alkali resistance: 99.43% 8) Mineral composition: SiO2: 64.24; Al2O3:17.11;Fe2O3: 3.57; CaO: 1.69; MgO: 0.94; K2O 5.95;Na2O: 4.769) 15 dimensions: 600 x 600 x 20mm China Travertine below