| A, | |
| Substance,IOR | |
| Air,1.000 | |
| Alcohol (ethyl),1.36 | |
| Aluminum,1.44 | |
| Amber,1.55 | |
| Acrylic,1.49 | |
| Asphalt,1.6 | |
| Ambergris,1.6 | |
| Agate,1.54 | |
| Alabaster,1.55 | |
| Anthracite,1.9 | |
| B, | |
| Substance,IOR | |
| Bakelite,1.54 | |
| Balsa,1.5 | |
| Blood,1.33 | |
| Bone,1.54 | |
| Butter,1.47 | |
| Brick,1.6 | |
| Basalt,1.5 | |
| Beryl,1.58 | |
| Barium Titanate,2.15 | |
| Bismuth,2.55 | |
| C, | |
| Substance,IOR | |
| Carbon Dioxide,1.00045 | |
| Carbon Tetrachloride,1.46 | |
| Calcium Carbonate,1.66 | |
| Chalk,1.51 | |
| Calcite,1.49 | |
| Ceramic,1.5 – 2.5 | |
| Cerium Fluoride,1.62 | |
| Crown Glass,1.52 | |
| Corn Oil,1.47 | |
| Castor Oil,1.48 | |
| Chloroform,1.44 | |
| D, | |
| Substance,IOR | |
| Diamond,2.42 | |
| Dacron,1.58 | |
| Dolomite,1.68 | |
| Dichloromethane,1.42 | |
| Diorite,1.69 | |
| Dextrose,1.53 | |
| Denatured Alcohol,1.36 | |
| Decane,1.40 | |
| Diatomaceous Earth,1.42 | |
| Dry Ice,1.53 | |
| E, | |
| Substance,IOR | |
| Ethanol,1.36 | |
| Egg White,1.52 | |
| Emerald,1.58 | |
| Epidote,1.75 | |
| Epoxy Resin,1.6 | |
| Elbaite,1.62 | |
| Ebonite,1.66 | |
| Endosperm,1.55 | |
| Erbium Fluoride,1.54 | |
| Ethyl Chloride,1.36 | |
| F, | |
| Substance,IOR | |
| Flourite,1.43 | |
| Frosted Glass,1.5-1.6 | |
| Fused Quartz,1.46 | |
| Fused Silica,1.46 | |
| Fire Opal,1.45 | |
| Firebrick,1.9 | |
| Fats,1.46 | |
| Feather,1.54 | |
| Fiberglass,1.5 | |
| Freshwater,1.33 | |
| G, | |
| Substance,IOR | |
| Glass,1.5-1.9 | |
| Gelatin,1.5-1.6 | |
| Granite,1.65 | |
| Glycerin,1.47 | |
| Graphite,2.1 | |
| Garnet,1.72 | |
| Gabbro,1.71 | |
| Galena,2.4 | |
| Gasoline,1.45 | |
| Gold,0.47 | |
| H, | |
| Substance,IOR | |
| Helium,1.000036 | |
| Honey,1.51 | |
| Human Cornea,1.376 | |
| Human Lens,1.406 | |
| Hydrogen,1.000132 | |
| Hafnium Dioxide,2.00 | |
| Halite,1.54 | |
| Hardwood,1.65 | |
| Halogenated Rubber,1.55 | |
| Halogenated Vinyl,1.53 | |
| I, | |
| Substance,IOR | |
| Ice,1.31 | |
| Indium Antimonide,3.42 | |
| Indium Phosphide,3.5 | |
| Indium Tin Oxide,1.9 | |
| Insect Wings,1.35 | |
| Ion Exchange Resin,1.47 | |
| Ivory,1.54 | |
| Iron,2.2 | |
| Iron Pyrite,2.4 | |
| Iron Oxide,2.4 | |
| J, | |
| Substance,IOR | |
| Jelly,1.33-1.36 | |
| Jade,1.66 | |
| Jet,1.66 | |
| Jello,1.33 | |
| Jasper,1.54 | |
| Jute,1.53 | |
| Jerusalem Stone,1.65 | |
| Jackfruit,1.52 | |
| Jarosite,1.8 | |
| Jicama,1.55 | |
| K, | |
| Substance,IOR | |
| Kerosene,1.43 | |
| Krypton,1.000413 | |
| Krystal Glass,1.52 | |
| Kunzite,1.66 | |
| Kyanite,1.72 | |
| Kevlar,1.45 | |
| Kapton,1.4 | |
| Kelp,1.5 | |
| Keratin,1.54 | |
| Kaolinite,1.56 | |
| L, | |
| Substance,IOR | |
| Lucite,1.5 | |
| Latex,1.55 | |
| Lard,1.46 | |
| Limestone,1.53 | |
| Lava,1.5 | |
| Leather,1.48 | |
| Lead,2.38 | |
| Lead Glass,1.5 | |
| Lead Crystal,1.66 | |
| Lignite,1.8 | |
| M, | |
| Substance,IOR | |
| Magnesium Oxide,1.71 | |
| Magnesium Fluoride,1.38 | |
| Mica,1.5 | |
| Methylene Iodide,1.74 | |
| Milk,1.35 | |
| Moldavite,1.5 | |
| Marble,1.5 | |
| Mercury,1.62 | |
| Methanol,1.33 | |
| Mylar,1.65 | |
| N, | |
| Substance,IOR | |
| Nylon,1.53 | |
| Naphthalene,1.65 | |
| Nitrile Rubber,1.52 | |
| Nitrile,1.51 | |
| Nacre (Mother of Pearl),1.53 | |
| Neodymium Glass,1.50 | |
| Neon,1.000067 | |
| Nickel,1.8 | |
| Nickel Oxide,2.8 | |
| Nickel Sulfide,2.6 | |
| O, | |
| Substance,IOR | |
| Oil,1.47 | |
| Olive Oil,1.47 | |
| Obsidian,1.5 | |
| Opal,1.45 | |
| Onyx,1.54 | |
| Orthoclase,1.52 | |
| Osmium,2.2 | |
| Osmium Tetroxide,1.78 | |
| Osmium Trichloride,1.67 | |
| Osmium Dioxide,2.1 | |
| P, | |
| Substance,IOR | |
| Plexiglass,1.5 | |
| Plastic,1.46-1.58 | |
| Polyethylene,1.54 | |
| Polypropylene,1.49 | |
| Paraffin,1.45 | |
| Pearl,1.53 | |
| Pyrex Glass,1.47 | |
| Pyroceram,1.47 | |
| Paper,1.5 | |
| Platinum,2.33 | |
| Q, | |
| Substance,IOR | |
| Quartz,1.54 | |
| Quartzite,1.65 | |
| Quartz Crystal,2.54 | |
| Quartz Glass,1.458 | |
| Quicksilver,1.62 | |
| Quark,1.4 | |
| Quaternium Resin,1.5 | |
| Quantum Dots,1.5-4 | |
| R, | |
| Substance,IOR | |
| Ruby,1.76 | |
| Rutile,2.9 | |
| Rock Salt,1.54 | |
| Rock Crystal,1.55 | |
| Rhenium,1.9 | |
| Rhenium Trichloride,2.12 | |
| Rhenium Dioxide,1.83 | |
| Rose Quartz,1.54 | |
| Rose Glass,1.50 | |
| Rubber,1.53 | |
| S, | |
| Substance,IOR | |
| Sapphire,1.77 | |
| Sugar,1.56 | |
| Salt,1.54 | |
| Sand,1.52 | |
| Silica Gel,1.43 | |
| Silicone,1.41 | |
| Soda-lime Glass,1.5 | |
| Sodium Chloride,1.54 | |
| Sodalite,1.48 | |
| Sodalime Glass,1.511 | |
| T, | |
| Substance,IOR | |
| Tungsten,2.5 | |
| Tungsten Disulfide,2.3 | |
| Tungsten Oxide,2.25 | |
| Tungsten Trioxide,2.1 | |
| Titanium,2.4 | |
| Titanium Dioxide,2.3-2.7 | |
| Tellurium,2.9 | |
| Tellurium Dioxide,2.15 | |
| Tellurium Hexafluoride,1.003 | |
| Titanium Glass,2.1 | |
| U, | |
| Substance,IOR | |
| Urine,1.35 | |
| Uranium,1.7 | |
| Uranium Dioxide,02.07 | |
| Uranium Hexafluoride,1.32 | |
| Uranium Tetrafluoride,1.46 | |
| Uranium Trifluoride,1.71 | |
| V, | |
| Substance,IOR | |
| Vacuum,1 | |
| Vanadium Oxide,2.5 | |
| Vanadium Pentoxide,2.3 | |
| Vanadium Dioxide,2.2 | |
| Vinyl,1.45 | |
| Vitreous Carbon,2.1 | |
| Vaseline Glass,1.48 | |
| Vinyl Resin,1.54 | |
| Vinyl Acetate,1.47 | |
| Volcanic Glass,1.48 | |
| W, | |
| Substance,IOR | |
| Water,1.33 | |
| Wax,1.45 | |
| Wood,1.5 | |
| Walnut Shell,1.55 | |
| Whiskey,1.36 | |
| Windshield Glass,1.5 | |
| Wollastonite,1.62 | |
| Wood Ash,1.52 | |
| Wood Charcoal,2.0 | |
| Wolframite,2.3 | |
| X, | |
| Substance,IOR | |
| Xenon,1.000296 | |
| Xylole,1.47 | |
| Xanthan Gum,1.45 | |
| Xenon Difluoride,1.8 | |
| Xenon Tetrafluoride,1.9 | |
| Xenon Hexafluoride,1.9 | |
| Xenon Trioxide,1.8 | |
| Xylenol,1.54 | |
| Xylene,1.5 | |
| Xylose,1.53 | |
| Y, | |
| Substance,IOR | |
| Yttrium Oxide,2.1 | |
| Yttrium Fluoride,1.56 | |
| Yttrium Barium Copper Oxide,2.6 | |
| Yttrium Lithium Fluoride,1.45 | |
| Yttrium Iron Garnet,1.95 | |
| Yttrium Aluminum Garnet,1.83 | |
| Yttrium Orthovanadate,1.8 | |
| Yttrium Stabilized Zirconia,1.92 | |
| Yttrium Vanadate,02.01 | |
| Yttrium Barium Copper Oxide,1.5 | |
| Z, | |
| Substance,IOR | |
| Zinc,2.4 | |
| Zinc Oxide,02.02 | |
| Zircon,1.93 | |
| Zirconium Oxide,2.1 | |
| Zirconium Carbide,2.2 | |
| Zirconium Nitride,2.1 | |
| Zirconium Tetrachloride,1.66 | |
| Zirconium Tetrabromide,1.55 | |
| Zinc Sulfide,2.37 | |
| Zinc Selenide,2.4 |