Silica, or more correctly silicon dioxide SiO2, is one of the most abundant compounds on the surface of the Earth, being most obvious as quartz and common sand. Silica has a multitude of uses depending on the degree of purity. Grades up to 99.5% SiO2 are used in the manufacture of glass, optical fibers and ceramics. We are exporters of Silica Quartz around the world with following specifications Purity 99.3 99.99 Fe2O3 0.018% maximum AI2O3 0.020 % maximum