Our Fine Grade Cerium Oxide is a rare earth mineral used for polishing glass, and removing blemishes, scuffs, superficial scratches, sanding marks, lime scale and adhesive residue. This Cerium oxide powder is a micro abrasive with an average particle size of 2.5 micron, a purity of 95% and high suspension in water for perfect professional grade optical polishing of all glass surfaces. Can be used on any type of glass including toughened glass. It can also be used on stones, crystals, minerals, marble, ceramics, or metal. Cerium oxide powder does not produce dangerous fumes so it’s safe to use. Used with a rotary polishing device for surface polishing, or as the final polishing step in multi-stage glass scratch repair process. Can also be used with a hand pad for light surface clean-up.