Glass-ceramic materials share many properties with both glass and more traditional crystalline ceramics. It is formed as a glass, and then made to crystallize partly by heat treatment. Unlike sintered ceramics, glass-ceramics have no pores between crystals. While materials such as "vaseline" glass are also glass-ceramics, the term mainly refers to a mix of lithium-, silicon-, and aluminium-oxides which yields an array of materials with interesting thermomechanical properties. The most commercial… (More on Glass-ceramic)