Turquoise is a kind of copper aluminum phosphate containing water, which is classified in phosphate minerals. This is a mineral precipitated by water flow. The color of turquoise varies from blue-green to light green and light yellow during liquid leaching and precipitation. Due to crystallization pressure and later pressure under mineralization and weathering conditions, the hardness changes greatly. Turquoise is classified as a semi-precious stone in modern gemstone identification and classification, among which blue is a precious jewel stone, and those with pure color and compact structure such as blue, turquoise and turquoise can be the first choice for high-end artistic carving. Turquoise is a kind of gem, which is passed down from the east and the west because of its beautiful color.

The high-quality turquoise in Yunxian County, Yunxi County and Zhushan, Hubei Province is a world-famous producing area. The turquoise on Yungai Mountain is named Yungai Temple turquoise because of Yungai Temple at the top of the mountain. It is the world-renowned original stone producing area of China turquoise carving art, enjoying a high reputation in the industry and collectors, and selling well at home and abroad.

Green, high porcelain, commonly known as "cloud cover blue"