  celadon is a term for ceramics denoting both a type of glaze and a ware of celadon (color). celadon originated in china, and notable kilns such as the longquan kiln in zhejiang province are renowned for their celadon works."celadon" at the glossary of chinese porcelain terms celadon production later spread to other regions in asia, such as japan, korea"goryeo celadon" and thailand. ==history== thumb||dragon kettle, made of celadon. made in 12th century. national treasures of south korea no.61 archaeologist wang zhongshu states that shards with a celadon ceramic glaze have been recovered from eastern han dynasty (25â220 ad) tomb excavations in zhejiang; he also states that this type of ceramic became well known during the three kingdoms (220â265).wang, zhongshu. (1982). han civilization. translated by k.c. chang and collaborators. new haven and london: yale university press. isbn 0-300-02723-0. according to richard dewar, the "true celadon", which requires a minimum 1260Â°c (2300Â°f) furnace temperature, a preferred range of 1285Â° to 1305Â°c (2345Â° to 2381Â°f), and reduced firing, originated at beginning of the northern song dynasty (960â1127).dewar, richard. (2002). stoneware. philadelphia: university of pennsylvania press. isbn 0-8122-1837-x, p. 42. the unique grey or green celadon glaze is a result of iron oxide's transformation from ferric to ferrous iron (fe2o3 â feo) during the firing process. longquan celadon wares, which nigel wood (1999) writes were first made during the northern song, had bluish, blue-green, and olive green glazes and high silica and alkali contents which resembled later porcelain wares made at jingdezhen and dehua rather than stonewares.wood, nigel. (1999). chinese glazes: their origins, chemistry, and recreation. philadelphia: university of pennsylvania press. isbn 0-8122-3476-6, pp. 75â76. ==etymology== the term "celadon" for the pottery's pale jade-green glaze was coined by european connoisseurs of the wares. one theory is that the term first appeared in france in the 17th century and that it is named after the shepherd celadon in honorÃ© d'urfÃ©'s french pastoral romance, l'astrÃ©e (1627), who wore pale green ribbons. (d'urfe, in turn, borrowed his character from 
Ceramic_glazes Chinese_inventions Chinese_pottery Japanese_pottery Korean_pottery Porcelain Types_of_pottery_decoration