Source: http://en.wikipedia.org/wiki/List_of_refractive_indices#List
| List of representative refractive indices | |||
| Material | λ (nm) | n | |
| Vacuum(by definition) | 1 | ||
| Air at STP | 1.000277 | ||
| Gases( at 0 °C and 1 atm) | |||
| Air | 589.29 | 1.000293 | |
| Carbon dioxide | 589.29 | 1.00045 | |
| Helium | 589.29 | 1.000036 | |
| Hydrogen | 589.29 | 1.000132 | |
| Liquids(at 20 °C) | |||
| 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 (MIN-MAX) | 1.336 | 1.582 | |
| Water | 589.29 | 1.333 | |
| Glucose solution in water(10%) | 589.29 | 1.3477 | |
| Glucose solution in water(20%) | 589.29 | 1.3635 | |
| Glucose solution in water(60%) | 589.29 | 1.4394 | |
| Solids at room temperature | |||
| 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 | |
| Other materials | |||
| Liquid helium | 1.025 | ||
| Water ice | 1.31 | ||
| Cornea (human) | 1.373/1.380/1.401 | ||
| Lens (human) (MIN-MAX) | 1.386 | 1.406 | |
| Acetone | 1.36 | ||
| Ethanol | 1.36 | ||
| Glycerol | 1.4729 | ||
| Bromine | 1.661 | ||
| Teflon AF | 1.315 | ||
| Teflon (MIN-MAX) | 1.35 | 1.38 | |
| Cytop | 1.34 | ||
| Sylgard 184 (Polydimethylsiloxane) | 1.4118 | ||
| PLA | 1.46 | ||
| Acrylic glass (MIN-MAX) | 1.49 | 1.492 | |
| Polycarbonate (MIN-MAX) | 1.584 | 1.586 | |
| PMMA (MIN-MAX) | 1.4893 | 1.4899 | |
| PETg | 1.57 | ||
| PET | 1.575 | ||
| Crown glass (pure) (MIN-MAX) | 1.5 | 1.54 | |
| Flint glass (pure) (MIN-MAX) | 1.6 | 1.62 | |
| Crown glass (impure) (MIN-MAX) | 1.485 | 1.755 | |
| Flint glass (impure) (MIN-MAX) | 1.523 | 1.925 | |
| Pyrex (a borosilicate glass) (MIN-MAX) | 1.47 | ||
| Cryolite | 1.338 | ||
| Rock salt | 1.516 | ||
| Sapphire (MIN-MAX) | 1.762 | 1.778 | |
| Sugar Solution(25%) | 1.3723 | ||
| Sugar Solution(50%) | 1.42 | ||
| Sugar Solution(75%) | 1.4774 | ||
| Cubic zirconia (MIN-MAX) | 2.15 | 2.18 | |
| Potassium Niobate (KNbO3) | 2.28 | ||
| Silicon carbide (MIN-MAX) | 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 (MAX-MIN) | 3000 - 16000 | 4.05 | 4.01 |
| Silicon (MAX-MIN) | 1200 - 8500 | 3.48 | 3.42 |