List of refractive indices List Some representative refractive indices

| Material | λ_nm | n_ |
|---|---|---|
| Sodium chloride | 589.29 | 1.544 |
| Liquid helium |  | 1.025 |
| Water ice |  | 1.31 |
| Cornea (human) |  | 1.373/1.380/1.401 |
| Lens (human) |  | 1.386 - 1.406 |
| Acetone |  | 1.36 |
| Ethanol |  | 1.36 |
| Glycerol |  | 1.4729 |
| Bromine |  | 1.661 |
| Teflon AF |  | 1.315 |
| Teflon |  | 1.35 - 1.38 |
| Cytop |  | 1.34 |
| Sylgard 184 (Polydimethylsiloxane) |  | 1.4118 |
| PLA |  | 1.46 |
| Acrylic glass |  | 1.490 - 1.492 |
| Polycarbonate |  | 1.584 - 1.586 |
| PMMA |  | 1.4893 - 1.4899 |
| PETg |  | 1.57 |
| PET |  | 1.5750 |
| Crown glass (pure) |  | 1.50 - 1.54 |
| Flint glass (pure) |  | 1.60 - 1.62 |
| Crown glass (impure) |  | 1.485 - 1.755 |
| Flint glass (impure) |  | 1.523 - 1.925 |
| Pyrex (a borosilicate glass) |  | 1.470 |
| Cryolite |  | 1.338 |
| Rock salt |  | 1.516 |
| Sapphire |  | 1.762–1.778 |
| Sugar Solution, 25% |  | 1.3723 |
| Sugar Solution, 50% |  | 1.4200 |