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What is celadon?

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posted Oct 6, 2016 by Pardeep Kohli

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Celadon is a term for ceramics denoting both wares glazed in the jade green celadon color, also known as greenware (the term specialists tend to use) and a type of transparent glaze, often with small cracks, that was first used on greenware, but later used on other porcelains. Celadon originated in China, though the term is purely European, and notable kilns such as the Longquan kiln in Zhejiang province are renowned for their celadon works. Celadon production later spread to other regions in Asia, such as Japan, Korea and Thailand. Finer pieces are in porcelain, but both the color and the glaze can be produced in stoneware and earthenware. Most of the earlier Longquan celadon is on the border of stoneware and porcelain, meeting the Chinese but not the European definitions of porcelain.
For many centuries, celadon wares were the most highly regarded by the Chinese Imperial court, before being replaced in fashion by painted wares, especially the new blue and white porcelain, under the Yuan dynasty. The similarity of the color to jade, traditionally the most highly valued material in China, was a large part of its attraction. Celadon continued to be produced in China at a lower level, often with a conscious sense of reviving older styles. In Korea the celadons produced under the Goryeo Dynasty (918–1392) are regarded as the classic wares of Korean porcelain.
The celadon colour is classically produced by firing a glaze containing a little iron oxide at a high temperature in a reducing kiln. The materials must be refined, as other chemicals can alter the color completely. Too little iron oxide causes a blue colour, too much olive and finally black; the right amount is between 0.75% and 2.5%.

answer Oct 6, 2016 by Manikandan J
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