Glass-Ceramic find application from your Kitchen to Space.
Transparent Cook-Tops and range tops that you see in the kitchen are Lithium aluminosilicate based glass-ceramics. Same family of glass-ceramic material find its application in Space as Satellite mirror blanks. (Examaple: Zerodur from Schott)
A few Magnesium Aluminosilicate Glasses on crystallization can result improved machinability to the system, Thus the produced glass-ceramics are machinable using conventional tools. They find wide variety of application due to their thermal stability and degassing properties. (Example: MACOR from Corning)