Glass is a solid, non-crystalline and often transparent material used widely for functional and decorative applications. The hard, brittle material is made from natural and abundant raw materials, such as sand, soda ash and limestone, which are melted at very high temperatures and then rapidly cooled. At high temperatures, glass becomes structurally similar to liquids, allowing it to be poured, blown, press and moulded into a variety of shapes and formats.
Various compositions of glass are engineered to achieve desired physical, chemical and optical properties. From construction to eyewear, different applications seek specific varieties of glass and therefore manufacturing processes differ too. Some of the most commonly used glass compositions are Soda-lime Silica Glasses and Borosilicate Glasses, which have distinct qualities.