A Junyao pear-shaped bottle vase, probably 19th Century

Jun ware (鈞窯) is a type of Chinese pottery, one of the Five Great Kilns of Song dynasty ceramics. The Jun glaze included blue-grey, sky-blue, moon-white, red and purple, the most prized have crimson or purple splashes. Varying the temperature of the kilns changed colour tints, a technique known as yaobian.