I-aluminiyam oxide emdakaidityanisiwe kwaye yenziwe yikristale phantsi kobushushu obuphezulu ukusuka kumxube we-bauxite kunye nezinye kunye nezinye izinto ezikrwada.Ibonakaliswa ngobunzima bayo obuphezulu, ukuqina okuhle kunye nokuma ngobukhulu.