Glass sand is divided into color glass sand and transparent glass sand, transparent glass sand on the appearance of white sugar, colored glass sand although it has color, but because it is later artificial treatment, so the color is uniform and bright, with the natural color and impression of the caramel is very easy to distinguish.

Natural emery is also called pomegranate sand. It is non-metallic natural mineral ore, and its color is natural red or green. RZG natural emery (pomegranate sand), which is rich in iron oxide and alumina, is also called the iron aluminum garnet, which is the largest of the garnet tribe, so it is widely used in sand spray and is dark red and looks less uniform.