| Material λ (nm) n |
| Vacuum 1 (by definition) |
| Air at STP 1.000277 |
| Air 589.29 1.000293 |
| Carbon dioxide 589.29 1.00045 |
| Helium 589.29 1.000036 |
| Hydrogen 589.29 1.000132 |
| Arsenic trisulfide and sulfur in methylene iodide 1.9 |
| Benzene 589.29 1.501 |
| Carbon disulfide 589.29 1.628 |
| Carbon tetrachloride 589.29 1.461 |
| Ethyl alcohol (ethanol) 589.29 1.361 |
| Silicone oil 1.336-1.582 |
| Water 589.29 1.3330 |
| 10% Glucose solution in water 589.29 1.3477 |
| 20% Glucose solution in water 589.29 1.3635 |
| 60% Glucose solution in water 589.29 1.4394 |
| Titanium dioxide (Rutile phase ) 589.29 2.496 |
| Diamond 589.29 2.419 |
| Strontium titanate 589.29 2.41 |
| Amber 589.29 1.55 |
| Fused silica (also called Fused Quartz) 589.29 1.458 |
| 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 |
| Sugar Solution, 75% 1.4774 |
| Cubic zirconia 2.15 - 2.18 |
| Potassium Niobate (KNbO3) 2.28 |
| Silicon carbide 2.65 - 2.69 |
| Cinnabar (Mercury sulfide) 3.02 |
| Gallium(III) phosphide 3.5 |
| Gallium(III) arsenide 3.927 |
| Zinc Oxide 390 2.4 |
| Germanium 4.01 |
| Silicon 590 3.962 |
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