Ru ware

Chinese pottery made by the Song dynasty around 1100 AD

Ru ware, Ju ware, or "Ru official ware" is a famous and extremely rare type of Chinese pottery from the Song dynasty, produced for the imperial court for a brief period around 1100. Fewer than 100 complete pieces survive, though there are later imitations which do not entirely match the originals. Most have a distinctive pale "duck-egg" blue glaze, "like the blue of the sky in a clearing amongst the clouds after rain" according to a medieval connoisseur, and are otherwise undecorated, though their colours vary and reach into a celadon green. The shapes include dishes, probably used as brush-washers, cups, wine bottles, small vases, and censers and incense-burners. They can be considered as a particular form of celadon wares.

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