Grea cosmetic grade sericite is a kind of flake fine-grained mica with silk luster, which is flaky monoclinic crystal, belonging to the layered structure of silicate「K0.5-1（Al，Fe，Mg）2（SiAl）4O10(OH)2·nH2O 」. Due to its natural ingredient and special structure, sericite has soft touching, gentle luster, skin affinity and other excellent characteristics. Compared with mica, the sericite has softer character and better ductility.
Based on high quality mica ores, advanced wet surface treatment technology and precise classification, Grea cosmetic grade mica has fine and smooth feeling for skin. Compared with sericite, mica has better performance in lustrousness.