Silica (quartz) Silica, SiO2, is a white or colorless crystalline compound found mainly as quartz, sand, flint, and many other minerals. Silica is an important ingredient to manufacture a wide variety of materials. Quartz; Quartz is the most abundant silica mineral. Pure Quartz is colorless and transparent. It is an important trace mineral that provides strength and flexibility to the connective tissues of your body â?? cartilage, tendons, skin, bone, teeth, hair, and blood vessels. Silica is essential in the formation of collagen, the most abundant protein found in your body. We are here to export silica quartz globally in an affordable price as per customer needs.