Apr 16, 2018· Vitreous Silica is the generic term used to describe all types of silica glass, and manufacturers refer to the material as either Fused Quartz or Fused Silica. Fused Quartz is manufactured by melting naturally occuring crystalline silica, such as sand or rock crystal. The production method is either electrically fused or flame fused.
Silica, or silicon dioxide (SiO2), is the same material found in quartz. The gel form contains millions of tiny pores that can adsorb and hold moisture. Silica gel is essentially porous sand. There is no significant difference in the chemical structure, it is all Silicone Dioxide.