Here is a blue glaze "Dan" - Gall-bladder vase. The shape of this vase took its name from its resemblance to a gall bladder. This decorative vessel type was usually used as a flower vase. The glaze layer is thick and seems it flows naturally which emerges a very beautiful work. From its glaze we can ensure that it was made in the middle year of Qing Dynasty. It is an unique design in such works. Its shape is delicate and elegant. The whole body of the vase is well-stacked. It is a good choice of collection.