ในตลาดเครื่องประดับจีน, there are many varieties of Xiuyu formed from serpentinite in various parts of our country. According to the introduction of gem expert Mr. Luan Bing in his book “อัญมณี”, there are 10 main varieties of Xiuyu jade in China as follows. (1) Xiuyan jade: It is a compact block composed […]
