Sandstone
 

 Color
 Water  Absorption
The capacity of water absorption is not more than 1.0%
 Hardness
 Porosity
 Compressive  Strength
 SiO2
 Iron (Fe2O3)
1.5%-1.6%
 Alumina (Al2O3)
 Soda (Na2O) &  Potash (Kro)
1.0% to 1.2%
 Lime (CaO)