Quartz glass definition

Quartz glass is a special glass that contains only a single component of silica. Due to the different types, processes and raw materials, foreign countries are often called silicate glass, quartz glass, fused silica, fused quartz, synthetic fused silica, and transparent, translucent, opaque quartz without a clear concept. China's collective name is quartz glass, which is classified according to the process, use and appearance, such as fused transparent quartz glass, fused silica glass, gas-refined transparent quartz glass, synthetic quartz glass, opaque quartz glass, optical quartz glass, quartz glass for semiconductors. And quartz glass for electric light source.

It is absolutely inappropriate to use a simple vocabulary such as "quartz" to name this material, because "quartz" is a generic term for the crystalline state of silica, which is in physical and chemical properties with glassy silica. There is a difference.