Ceramic glaze, or simply glaze, is a glassy coating on ceramics. It is used for decoration, to ensure the item is impermeable to liquids and to minimise the adherence of pollutants.
Composite body, painted, and glazed bottle. Iran, 16th century (Metropolitan Museum of Art)
Detail of dripping rice-straw ash glaze (top), Japan, 1852
İznik tiles in the Enderûn Library, Topkapi Palace, Istanbul
Sancai coloured lead-glazes in a Tang dynasty tomb guardian.
Glass is a non-crystalline solid that is often transparent, brittle and chemically inert. It has widespread practical, technological, and decorative use in, for example, window panes, tableware, and optics.
A glass building facade
A piece of volcanic obsidian glass
Moldavite, a natural glass formed by meteorite impact, from Besednice, Bohemia
Tube fulgurites