Glass never wears out, and can be recycled over and over again.
Most recycled glass comes from glass containers for food, beverages and cosmetics.
The only material used in greater volumes than crushed glass is sand. Nearly all types of commercial glass fit into one of six classifications based on chemical composition. Its mixture includes the oxides of silicon, calcium and sodium and is the cheapest to manufacture. It can be made into a wide variety of shapes such as bottles and windows. Although barriers to recycled glass are fewer than for other materials, there are several that persist.