Boride Engineered Abrasives offers its Golden Star moldstone. Made from aluminum oxide grain, the Golden Star is of medium hardness with fast breakdown. According to the company, it offers quick material removal and contouring and leaves a smooth finish. The Golden Star is designed for tool steels, EDM surfaces, milling and machining marks. No pre-lubrication process is required. The Golden Star can be used with profiles as well as during hand stoning.