Vase with sky-blue glaze
China, Jun kilns
Northern Song or Jin dynasty, 1100-1200
Glazed stoneware, splashed with copper
Museum no. FE.156-1975
Sir John Addis Gift
Jun wares are one of the Five Great Song Ceramics. Although coarsely potted, they are remarkable for their subtly coloured glazes, which are a great technical feat. Careful control of the cooling process allowed pinhole bubbles to form within the glaze. These refract the light, enhancing the glaze colour. Here the visual impact is heightened by a single splash of purple.