TABLE IV
Colour-Dispersion of Gem-Stones[9]
| Moonstone | ·012 |
| Quartz | ·013 |
| Beryl | ·014 |
| Topaz | ·014 |
| Chrysoberyl | ·015 |
| Tourmaline | ·017 |
| Spodumene | ·017 |
| Corundum | ·018 |
| Peridot | ·020 |
| Spinel | ·020 |
| Garnet (Almandine) | ·024 |
| Garnet (Pyrope) | ·027 |
| Garnet (Hessonite) | ·028 |
| Zircon | ·038 |
| Diamond | ·044 |
| Sphene | ·051 |
| Garnet (Demantoid) | ·057 |