| Raman Shift (cm−1) | Symmetry | Symmetry type | Vibration mode |
| 116.8 | T2g |
| External vibration |
| 165.8 | T2g |
| |
| 226.1 | T2g | ν4 | Gd-O bond in dodecahedral GdO8, distortional and bending vibration |
| 268.7 | Eg | ν2 | Gd-O bond in dodecahedral GdO8, bending vibration |
| 320.8 | Eg | ν4 | Sc-O bond in octahedral ScO6, distortional and bending vibration |
| 345.7 | A1g | ν1 | Gd-O bond in dodecahedral GdO8, symmetric and stretching vibration |
| 374.4 | A1g | ν1 | Y-O bond in dodecahedral YO8, distortional and bending vibration |
| 418.2 | T2g | ν4 | Ga-O bond in tetrahedral GaO4, distortional and bending vibration |
| 482.6 | T2g | ν4 | Y-O bond in dodecahedral YO8, symmetric and stretching vibration |
| 516.5 | A1g | ν1 | Sc-O bond in octahedral ScO6, symmetric and stretching vibration |
| 589.6 | T2g | ν3 | Sc-O bond in octahedral ScO6, dissymmetric and stretching vibration |
| 634.2 | Eg | ν2 | Ga-O bond in tetrahedral GaO4, bending vibration |
| 732.1 | A2g T2g | ν1 ν3 | Ga-O bond in tetrahedral GaO4, symmetric stretching and dissymmetric stretching |