HOME > Products > Artificial Silica Sand   인조규사 Artificial Silica Sand is the crushed and pulverized silica stone after mining. It has high SiO2 content. The grade and use of it are classified based on its fire resistance, color, etc. Silica stone can be found all cross Korea. In terms of deposits, while middle and low grade of Silica Stone are abundant, high grade one is rare.