A dark gray, silvery luster, rare earth metallic element of the Periodic System with the symbol Y. Flammable when powder from. Used in alloys and as a metal deoxidizer.
See Alexandrite Tsarstone collectors guide, Definition of Yttrium, http://w.alexandrite.com/viewpage.html?id=GG-084-00005 (A dark gray, silvery luster, rare earth metallic element of the Periodic System with the symbol Y. Flammable when powder from. Used in alloys and as a metal deoxidizer.) (as of Apr. 06, 2026, 18:44 GMT).