Sand of river, grail
Rutile / leucoxene sand
Coir, ggbs, mirco silica
Sodium silicate, precipitated silica
Fused zirconia and silica powder
Silica sol, nano polishing liquid
Silica material
Stone and minerals such as quartz, feldspar potash, feldspar soda, mica, vermiculite, soap stone and silica sand.