Holmium(III) oxide, okanyei-holmium oxidengumthombo weHolmium onganyibiliki kakhulu ngokushushu. Yikhompawundi yemichiza yento enqabileyo-esemhlabeni i-holmium kunye neoksijini enefomula ye-Ho2O3. I-Holmium oxide ivela kwiincinci ezincinci kwi-monazite yamaminerali, i-gadolinite, kunye nezinye iiminerali ezinqabileyo zomhlaba. Isinyithi seHolmium sikhupha ngokulula emoyeni; ke ngoko ubukho be-holmium kwindalo bufana nqwa neholmium oxide. Ifanelekile kwiglasi, i-optic kunye ne-ceramic applications.