There has always been a misunderstanding about Hetian jade. When it comes to Hetian jade, it is considered to be the jade from Hetian in Xinjiang, and only Xinjiang has Hetian jade. Hetian jade is divided into broad sense and narrow sense. Narrowly, it refers to Hetian jade in Xinjiang, and broadly, it also includes Russian jade, Qinghai jade and Han Guoyu. In fact, Hetian jade, in the broadest sense, refers to a polycrystalline aggregate mainly composed of hydrated calcium magnesium silicate, namely tremolite.