Porcelain glaze

Blue glaze
Brown and Purple glaze
Cracked glaze
Furnace transmutation glaze



Jun glaze

Jun glaze, first fired in Jun kiln at the Song dynasty, is an outstanding representative of furnace transmutation glaze. The characteristic is that it glitters red or purple speckle in the whole sky blue. It is analyzed that it suspends numerous small round particles among the successive glass phase medium. The cover coat can takes on beautiful blue opalescent because these small particles can scatter short wave light. Additionally, it also takes on magenta because the colour generation action of the reduction copper in the glaze. It sets off with sky blue each other just like a rosy cloud. The poet praised its movement and beautiful colors with "the purple setting sun become to blue suddenly." In addition, the glaze juice of the Jun glaze is thick, the glaze bubble is big, there are curves just like "earth worm mark" in the glaze and the cracks of the cover coat are different in size. It is measured that the Jun glaze is fired by reducing atmosphere at 1260℃--1270℃.




Furnace transmutation glazed gall-bladder



Oven Jun glaze




  Oven Jun glaze, a kind of low temperature glaze, imitates Jun kiln fired by Jingdezhen during the years of Yongzheng in the Qing dynasty. The firing method as follows: the porcelain body fired by high temperature is fired again at the low temperature furnace after it is glazed. Therefore, it is called oven Jun glaze. According to the Record of the Southern Kiln, oven Jun glaze is fired by furnace. It is the best if the color is suffused with red dot. On the contrary, it belongs to the second-class if the color is suffused with blue dot.
  The oven Jun glaze has rich color tone including pale blue, fresh green, chun red glaze, vermilion red and so on. It looks very gorgeous because it has strong luster by using frit glaze. But it lacks of the sense of massiness and riot of the high temperature glaze. The characteristic of Jun glaze in the years of Yongzheng is that the glaze not only flows fast but also takes on mauve after it flows. Usually, there are orange skin designs just like sheet on the cover coat. It takes on various kinds of colors when glistening. The flowing shape of the furnace transmutation in the years of Qianlong is as fluency as the ones in years of Yongzheng. The color of the furnace transmutation design is suffused with blue in the glaze. But it doesn't flow fluently down to the years of Jiaqing. Moreover, the color is blue. It is no longer natural furnace transmutation after the years of Daoguang. The circles, bigger than grain of rice, are drawn on it by purple paintbrush.


Earth worm mark




  Earth worm mark is one characteristic of the Jun glaze. Usually, there are many curves just like earth worm track-like in the glaze. If the glaze cracks or it occurs the phenomenon of crack at the beginning of firing and the cracks are filled up by the part of low viscosity at the high temperature, it will form. It occurs crack and creeping and other phenomena because its glaze is especially thick and the porcelain body is biscuit fired before glazing.



Fiery red




  It is a kind of imitation Jun glaze fired by Jingdezhen during the years of Yongzheng in the Qing dynasty. Furnace transmutation fancy glaze, one kind of imitation Jun glaze, takes on fiery color and design after fired by high temperature because many different colored glazes are glazed on one vessel. The occurrence of fiery red indicates that the fancy glaze include rich colors. A furnace transmutation ear vase made during the years of Yongzheng was shown at the Imperial Palace. It is an outstanding work. Purple speckles glittering red are dispersed in the glaze. Red as flame is the basic glazed color from the neck to the ring of the vase. Among them, flare blue, flare yellow, bluish white and other colors radiate downhill by the shape of needle. The entire vase is magnificent just like the flaring flame.





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