... high intensity lamps that are needed for movie projectors. Yttrium has been used for decades in a diamond.simulant called ... YAG or yttrium aluminum garnet which has physical properties similar to natural ... Oxide, PR+ND Oxide, Samarium Oxide, Europium Oxide, Gadolinium Oxide, Yttrium Oxide, Terbium Oxide, Dysprosium Oxide, Holmium Oxide, Erbium Oxide, ...