Pumice Stone

Pumice-StonePumice-StonePumice Stone is a volcanic rock that consists of highly vesicular or perforated volcanic glass. Pumice Stone is created when super-heated and highly pressurized rock is violently erupted from a volcano.
The unusual foamy configuration of pumice happens because of simultaneous rapid cooling and rapid de-pressurization. Pumice Stone float on water. Pumice Stone commonly originated from Indonesia and Turkey. Different sizes of Pumice Stones are available, such as 2-5cm which known as small Pumice Stone. 3-5cm which known as medium size Pumice Stone. And 5-7cm which is known as Large size Pumice Stone. Chemical Composition of Pumice Stone is Silica (SiO2) =70%, Al2O3=13%, Fe2O3= 2%, Na2O= 3.5%. The hardness of Pumice Stone in Mohr scale is 6. The melting temperature of Pumice Stone is 15000˚ C and pH value is 8 and the density is 2.313g/cm3.