Silica sand is a major ingredient in the production of glassmaking—in fact, silica is the primary component in standard glass products ranging from windows to bottles. The purity of the silica sand used plays a role in determining the colour, strength and clarity of the final product.
The most common form of SiO2 is quartz – a chemically inert and relatively hard mineral. SiO2 grades at a 7 out of 10 on Mohs hardness scale, making it ideal for use as filtration media and abrasive blasting sands.