"Red glazed amphora ring unglazed" 20 cm high, 9 cm diameter, bottom 6,5 cm, red glaze is a kind of color glaze, divided into copper red glaze and glaze red two categories, the main varieties of copper red glaze is bright red, langyao is red, red bean, ruby red, underglaze red etc.. The main varieties have pink glaze red, red coral alum [1]. The red glaze can be traced back to the early years of the Northern Song Dynasty, but the red glaze really pure and stable is the first burning red; to Jiajing, a burning iron alum red coloring agent. Red is the high temperature glaze, alum red for low temperature glaze. There are many kinds of red glazes, except for the fresh infrared, which has changed from shade to shade to various varieties. A deep ruby red, Zhu Hong, red blood, red, red and other products. Red with yellow and yellow apricot shirt, also called the coral glaze, in addition to orange and bordeaux. Pale pink is generally called pink, gray is called cowpea red, grey and dark is called suckling mouse skin; carmine is also pink. The most beautiful of the pink is called "beauty drunk". Has a high collection value, by the vast number of collectors favorite.