http://www.liulichinamuseum.com/http://www.liulichinamuseum.com/StageL.phpInteresting translation of one of their Q&A on glass
A long history of Chinese glass art, there are records as early as the Shang and Zhou, according to research, especially on the "beauty tears," the legend, its origin about three years in the week Jing Wang (Yue Gou three years), according to Chinese History, in this era should be BC 493. Tang Yuan Zhen's "Ode to glass" in the description, "colored with the ice, nothing separated Xian Chen" to convey the dazzling glass attractive style.