What is glass

Glass is a product created from silicon and is considered a liquid with a high level of viscosity and not a real solid as it does not have a regular internal crystalline structure.

Glass is produced by means of fusion of silicon mixtures, such as quartz and sand and metallic carbonates (sodium, potassium, calcium, iron). Metallic silicates are formed from this reaction and form the glass.

Its varieties include: common glass, crystal colourless glass, glass for thermometers, glass for quartz etc.

In order to create coloured glass, small quantities of metallic oxides are added: iron for green, cobalt for blue, colloidal gold or copper for red, tin for milky coloured glass.

Fusion is created in highly heat resistant aluminium crucibles, heated in electric or gas ovens.