I-Lutetium(III) Oxide(I-Lu2O3), eyaziwa nangokuthi i-lutecia, iqinile emhlophe kanye ne-cubic compound ye-lutetium.Iwumthombo we-Lutetium ongancibiliki kakhulu ngokushisa okushisayo, onokwakheka kwekristalu eyi-cubic futhi etholakala ngefomu lempushana emhlophe.Le oxide yensimbi yomhlaba eyivelakancane ikhombisa izinto ezibonakalayo ezinhle, njengendawo ephezulu yokuncibilika (engaba ngu-2400°C), ukuzinza kwesigaba, amandla emishini, ubulukhuni, ukuguquguquka okushisayo, nokwanda okuphansi kokushisa.Ifanele izingilazi ezikhethekile, izicelo ze-optic neze-ceramic.Ibuye isetshenziswe njengezinto ezibalulekile zokusetshenziswa kwamakristalu e-laser.