What is Crystallized Nano Glass Stone? As the new green building material, Crystallized Glass is a kind of artificial marble made by twice melt and Crystallization under thousands of temperatures for more than 24 hours, which is like the formation of natural granite. Though quartz sand takes up around 30% of the whole raw material, it is different from Caesar Stone as no polymer resin is needed to solidify the slab. Compared with Natural marble, little maintenance is needed for Crystallized Glass by Tianrun Stoneglass. Though widely known as Crystallized Glass in America, many people like to call it Marmo glass, crystal glass, and microcrystal, ken tang nanoglass.