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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. [1] Glazing renders earthenware impermeable to water, sealing the inherent porosity of earthenware. It also gives a tougher surface.
Salt-glaze or salt glaze pottery is pottery, usually stoneware, with a ceramic glaze of glossy, translucent and slightly orange-peel -like texture which was formed by throwing common salt into the kiln during the higher temperature part of the firing process. Sodium from the salt reacts with silica in the clay body to form a glassy coating of ...
Pottery that has been buried, such as from an archaeological site, is better stored at a constant low humidity. This will help to keep any salts from efflorescing, a process which can mar the surface as well as remove the surface glaze. [5] In general ceramics are typically inert and are not sensitive to elevated light levels.
Lajvardina-type ceramics were developed in the 13th century following the Mongol invasion of Persia. It was produced throughout the Ilkhanate reign. It is characterized by its deep blue color and often features geometric patterns or foliage inlaid with gold leaf. The style was created using overglaze enamel.
Rio Grande Glaze Ware. Agua Fria Glaze-on-red bowl. Rio Grande Glaze Ware is a late prehistoric and historic pottery tradition of the Puebloan peoples of New Mexico. The tradition involved painting pots with black paint made with lead ore; as the pots were fired the black paint fused and sometimes ran. The tradition lasted from AD 1315 to 1700.
Tin-glazing. Tin-glazing is the process of giving tin-glazed pottery items a ceramic glaze that is white, glossy and opaque, which is normally applied to red or buff earthenware. Tin-glaze is plain lead glaze with a small amount of tin oxide added. [1] The opacity and whiteness of tin glaze encourage its frequent decoration.