Among the high-fired black monochromes of the Kangxi period (1662-1722), the most famous is a lustrous, dense black glaze that was derived from iron, cobalt, and manganese oxides.
It is called wujin ("black bronze') by the Chinese and is commonly known in the West as mirror-black.
These brilliant mirror-black wares have frequently been penciled over in gilt. Because of the extremely fugitive nature of such gilt decoration, it has often disappeared, leaving only the ghost of a pattern that can be seen when a light is raked over the glaze.
Se also enamels