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Porcelain - Wikipedia, the free encyclopedia |
 | | Some clays used for making ceramic wares are too cohesive to be thrown on the wheel, including for example, the brown clays used to form the bodies of the red stonewares of Yixing in the Chinese province of Jiangsu and as a result of this Yixing-wares are almost always hand-built. |
 | | It is generally supposed that the first glazes to appear on ceramic wares resulted from the unavoidable presence in the kiln of lime-rich wood ash, which acted on the surface of the wares as a flux. |
 | | Porcelain wares may be decorated under the glaze, using pigments that include cobalt and copper, or over the glaze using coloured enamels. |
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