As the quartz glass is the kind of glass which is constituted by the sole carbon dioxide, so basically the materials for quartz glass are crystal, silica, silicide and SICI4. Those materials will be melted at a high melting point or deposited by chemical gases.

Classifications of quartz glasses are as the follows:
Clear quartz glass and opaque quartz glass. And the opaque quartz glass is a little white because of any air marks.

The advantages of quartz glass:
High heat-protection
Low expansion capability
Excellent thermal shock resistance
External chemical stability
Excellent electricity resistance

Applications of quartz glass:
The quartz glass is widely applied to any national industries and national defense scientific technologies, such as semiconductor, electric light source, optical-fiber communication, laser technology, optical instruments, laboratory instruments, chemical and electric fields.