Available Decorative, Garden Ornamenting, Vanity Top, Indoor - Indoor Wall Cladding, Lamp PHYSICO-MECHANICAL SPECIFICATIONS Specification Unit Specification Hardness (Mohs) 2,7 Unit Volume by Weight (gr/cm 3 ) 0,1 Water Absorption at Atmospheric Pressure By Weight(%) 0,4 By Volume (%) 0,4 Porosity (%) 400 Compressive Strength (Kgf/cm 2 ) 490