Jade, Gu Mingsi, is a kind of dark green jade produced in Tibet, and is known as "Wang Shi, the capital of medicine" among the people. In jewelry works, the standard name of dark green jade is serpentine jade. Serpentine jade is named after its origin, such as Guangdong Southern Jade, Liaoning Xiuyu Jade and Taiwan Province Taiwan Jade.
Wang Shi refers to the dark green jade produced in Tibet. It has been found that dark green jade has been used to treat diseases in China for over 1700 years. Dark green jade is called "Medicine Wang Shi" among the people.