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://m.alexandrite.net/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. 03, 2026, 15:36 GMT).