Glass is an amorphous (non-crystalline) solid. Because it is often transparent and chemically inert, glass has found widespread practical, technological, and decorative use in window panes, tableware, and optics.
Glass is an inorganic solid material that is usually transparent or translucent as well as hard, brittle, and impervious to the natural elements. What is glass made out of? Commercial glass is usually made of sand, limestone, and sodium carbonate that is raised in temperature until it is molten.