Sandblasting SiC green silicon carbide grit Sandblasting SiC green silicon carbide grit is made of quartz sand, petroleum coke (or coal char), salt and other raw materials through high temperature smelting by resistance furnace, Sandblasting SiC green silicon carbide grit presents green & semi-transparent, its hardness and purity are all superior to black Silicon Carbide. Sandblasting SiC green silicon carbide grit have high rigidity with strong cutting force, steady chemical property, and good capacity of heat-transmission and metal-cutting.