Quartz Powder (Fused and Synthetic) (SiO2) Reade
Different forms are also used as gemstones. Because it is a primary ingredient in sand it is also used to make glass labware, silica brick, cement, and mortar. Ground quartz is used as an abrasive in stonecutting, sandblasting, and glass grinding. Powdered quartz is used in making porcelain, scouring soaps, sandpaper, and wood fillers.