Use Brownies to achieve a smooth surface, Greenies for a lustrous polish and Supergreenies for a super-polish. Silicone polishers impregnated with high quality abrasives Use Brownies for pre-polishing, Greenies for polishing and Supergreenies for super-polishing Use Brownie/Greenie/Supergreenie Stones for: amalgams, precious alloys and non-precious alloys.