Green WhiteChina BlueUnderglaze Red

Underglaze red porcelain is achieved by first hand-painting a copper oxide-based pigment on white biscuit which is then over-glazed with a transparent glaze and then fired at 1300°C under an inner flame also known as reduction firing.

During the Xuande Era of Ming Dynasty and the Kangxi and Yongzheng Eras of Qing Dynasty, underglaze red porcelain reached its peak, and painted porcelain using both underglaze red and China blue was fervently sought after.

Full of irregularities, Underglaze red has a wide range of its color effect, usually appearing as bright red, but oftentimes in a darker or lighter red with green or white spots, and sometimes even with pink or yellow appearing along the edge similar to blurring effects of ink painting on rice paper.

Underglaze red requires rigid temperature control during firing, because it is extremely sensitive to kiln temperature, and it only turns into a proper red color under an inner flame, which is much more difficult than firing China blue. Underglaze red wares available today are therefore considered very rare, as even the underglaze red relics discovered from the Yuan Dynasty tombs were not considered successful.

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