Abstract: Microcrystal wollastonite glass is a green artificial glass which contains many microcrystal wollastonites. It can be used to imitate verdelite, emerald and jadeite jade in the market. According to the characteristics of its refraction index(1.513), specific gravity(2.540), hardness(5.3~5.6) and radiated microcrystal wollastonite, it can be distinguished from the natural gems and jade.