Porcelain glaze

Blue glaze
Brown and Purple glaze
Cracked glaze
Furnace transmutation glaze



Blue glaze

  Blue glaze is first found in the "Tang sancai". But it is still low temperature blue glaze. It has only sense of gorgeous but lack of the color tone of steady. The high temperature blue glaze is produced in the Yuan dynasty. Not only is the number of blue glazed ware much but also the quality of the blue glazed ware is fine after the Ming dynasty, especially, during the years of Xuande. Therefore, it is regarded as the top grade among the porcelain made during the years of Xuande. A lot of new varieties such as cassius blue, cerulean blue and so on are produced down to the years of Kangxi in the Qing dynasty.




Blue glazed "zun" in the shape of hoof (Qianlong)



Peacock blue





  The cover coat of the ordinary blue glaze doesn't peel off easily because it is fired by high temperature. But the glaze cracks and peels off easily when peacock blue glaze is glazed directly on the unglazed body. Or it is glazed on the white glazed wares before it is firing. It is low temperature glaze. Most of the peacock blue glaze belongs to the big plate category of
different pecification and small wares are less. In addition, there is still amphora vase similar to the animal jar in the years of Hongzhi. It belongs to ritual ware made in official kiln during the years of Jiaqing. The vessel shape is shorter slightly than the one in the years of Hongzhi. The peacock blue is glazed on the ware from the top to the bottom. It is bright colored but it is not even.


Altar blue

  It is also called deep blue or sacrificial blue. Its characteristic is that the color and lustre is deep, the cover coat does neither flow nor crack, the shade of the color tone is even and the color generation is relatively stable. The altar blue glaze flourishes during the years in the Ming dynasty. It is mentioned in the same breath with shiny red and sweet white in the Record of the Southern Kiln. It is regarded as the top grade among the porcelain made during the years of Xuande. Gold enamel is often decorated on the altar blue glazed wares besides the single color glaze. In addition, there are also the ones carved with flowers secretly or the ones printed in flowers secretly and this kind of products is the most among the products made during the years of Xuande. It has gained great achievements in the developments of the altar blue during the years of Kangxi in the Qing dynasty. There are no cracks in the thin glaze and the color of the glaze is relatively dark.



Blue Sky

Sky blue, evolves from the celeste glaze, is a kind of high temperature color glaze. It is first fired during the years of Kangxi. The glaze color is not only suffused with blue but also light. It is sparkling, pure, simple and elegant just like a bright blue sky. Therefore, it is called "sky blue". The content of cobalt is below 2%and the mental elements such as copper, iron, titanium and so on play a role as color generation in the glaze. Its color generation is stable, fine and good-looking. It can favorably with cowpea red.
  The category of the sky blue glazed wares belongs to the small studying appliance during the years of Kangxi. The vessel shape such as vase, canister and so on cannot be found until the years of Yongzheng and Qianlong. Moreover, most of them made in official kiln. Sky blue glazed decahedron six bowls made during the years of Yongzheng is very characteristic and a cluster of purple grapes or bat is drawn on every side. The way of drawing and decoration imitate foreign porcelain. Most of them are fired by single firing.


Cassius blue

  Cassius blue is called "alabaster blue" or "azure blue". It is called cassius blue because it has navy-blue speckle like water on the light blue ground just like the sprinkling blue blob. Cassius blue has already produced during the years of Xuande in the Ming dynasty, but it is not mature until the years of Kangxi at the Qing dynasty. The technology of application of glaze has changed a little. First, cobalt blue pigment is blown to the body. It will form cyan dot. Secondly, the white glaze is blown to it. It is really lovely after it is fired because there are some snowflakes flying in the cyanine. They belong to the top grade products including various kinds of gold flower or blue and white design are painted on the cassius.


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