Materials IOR				Liquids	Minerals & Gemstones	Transparent materials	Metals	Vacuum 1.0000
	Acetone 1.36	Danburite 1.633	Lapis Gem 1.500	Staurolite 1.739	Acetone 1.36	Alexandrite 1.746 - 1.755	Eye, Aqueous humor 1.33	Aluminum 1.39	Air 1.0003
	Actinolite 1.618	Diamond 2.417	Lapis Lazuli 1.61	Steatite 1.539	Alcohol, Ethyl (grain) 1.36	Almandine 1.75 - 1.83	Eye, Cornea 1.38	Copper 2.43	Ice 1.31
	Agate 1.544	Diopside 1.680	Lazulite 1.615	Steel 2.50	Alcohol, Methyl (wood) 1.329	Amber 1.539 - 1.545	Eye, Lens 1.41	Gold 0.166	Water 1.333
	Agate, Moss 1.540	Dolomite 1.503	Lead 2.01	Stichtite 1.520	Beer 1.345	Amethyst 1.532 - 1.554	Eye, Vitreous humor 1.34	Mylar 1.65	Ethyl Alcohol 1.36
	Air 1.0002926	Dumortierite 1.686	Leucite 1.509	Strontium Titanate 2.410	Carbonated Beverages 1.34 - 1.356	Ammolite 1.52 -1.68	Glass, Arsenic Trisulfide 2.04	Nickel 1.08	Plexiglas 1.51
	Alcohol 1.329	Ebonite 1.66	Magnesite 1.515	Styrofoam 1.595	Fruit Juice	Andalusite 1.629 - 1.650	Glass, Crown (common) 1.52	Platinum 2.33	Crown Glass 1.52
	Alexandrite 1.745	Ekanite 1.600	Malachite 1.655	Sulphur 1.960	Chlorine (liq) 1.385	Apatite 1.632 - 1.42	Glass, Flint, 29% lead 1.569	Silver 1.35	Light Flint Glass 1.58
	Aluminum 1.44	Elaeolite 1.532	Meerschaum 1.530	Synthetic Spinel 1.730	Cranberry Juice (25%) 1.351	Aquamarine 1.567-1.590	Glass, Flint, 55% lead 1.669	Titanium 2.16	Dense Flint Glass 1.66
	Amber 1.546	Emerald 1.576	Mercury (liq) 1.62	Taaffeite 1.720	Glycerin 1.473	Axenite 1.674 - 1.704	Glass, Flint, 71% lead 1.805		Zircon 1.923
	Amblygonite 1.611	Emerald, Synth flux 1.561	Methanol 1.329	Tantalite 2.240	Honey, 13% water content 1.504	Beryl 1.57 - 1.60	Glass, Fused Silica 1.459	Cinnabar 3.02	Diamond 2.417
	Amethyst 1.544	Emerald, Synth hydro 1.568	Moldavite 1.500	Tanzanite 1.691	Honey, 17% water content 1.494	Beryl, Red 1.570 - 1.598	Glass, Pyrex 1.474	Gallium(III) 3.5	Rutile 2.907
	Anatase 2.490	Enstatite 1.663	Moonstone, Adularia 1.525	Teflon 1.35	Honey, 21% water content 1.484	Chalcedony 1.544 - 1.553	Lucite 1.495	Gallium(III) 3.927	Gallium phosphide 3.50
	Andalusite 1.641	Epidote 1.733	Moonstone, Albite 1.535	Thomsonite 1.530	Ice 1.309	Chrome Tourmaline, 1.61 - 1.64	Nylon 1.53	Silicon 4.01
	Anhydrite 1.571	Ethanol 1.36	Natrolite 1.480	Tiger eye 1.544	Milk 1.35	Citrine 1.532 - 1.554	Obsidian 1.50		Vacuum 1 (exactly)
	Apatite 1.632	Ethyl Alcohol 1.36	Nephrite 1.600	Topaz 1.620	Oil, Clove 1.535	Clinohumite 1.625 - 1.675	Plastic 1.460 - 1.55		Helium 1.000036
	Apophyllite 1.536	Euclase 1.652	Nitrogen (gas) 1.000297	Topaz, Blue 1.610	Oil, Lemon 1.481	Coral 1.486 - 1.658	Plexiglas 1.488		Air @ STP 1.0002926
	Aquamarine 1.577	Feldspar, Adventurine 1.532	Nitrogen (liq) 1.2053	Topaz, Pink 1.620	Oil, Neroli 1.482	Crystal 2.000	Salt 1.516		Carbon dioxide 1.00045
	Aragonite 1.530	Feldspar, Albite 1.525	Nylon 1.53	Topaz, White 1.630	Oil, Orange 1.473	Crysoberyl, Catseye 1.746 - 1.755			Water Ice 1.31
	Argon 1.000281	Feldspar, Amazonite 1.525	Obsidian 1.489	Topaz, Yellow 1.620	Oil, Safflower 1.466	Danburite 1.627 - 1.641			Liquid Water (20°C) 1.332986
	Asphalt 1.635	Feldspar, Labradorite 1.565	Olivine 1.670	Tourmaline 1.624	Oil, vegetable (50° C) 1.47	Diamond 2.417			Cryolite 1.338
	Augelite 1.574	Feldspar, Microcline 1.525	Onyx 1.486	Tremolite 1.600	Oil of Wintergreen 1.536	Emerald 1.560 - 1.605			Acetone 1.36
	Axinite 1.675	Feldspar, Oligoclase 1.539	Opal 1.450	Tugtupite 1.496	Rum, White 1.361	Emerald Catseye 1.560 - 1.605			Ethanol 1.36
	Azurite 1.730	Feldspar, orthoclase 1.525	Oxygen (gas) 1.000276	Turpentine 1.472	Shampoo 1.362	Flourite 1.434			Teflon 1.35 - 1.38
	Barite 1.636	Fluoride 1.56	Oxygen (liq) 1.221	Turquoise 1.610	Sugar Solution 30% 1.38	Garnet, Andradite 1.88 - 1.94			Glycerol 1.4729
	Barytocalcite 1.684	Fluorite 1.434	Painite 1.787	Ulexite 1.490	Sugar Solution 80% 1.49	Garnet, Demantiod 1.880 - 1.9			Acrylic glass 1.490 - 1.492
	Benitoite 1.757	Formica 1.47	Pearl 1.530	Uvarovite 1.870	Turpentine 1.472	Garnet, Mandarin 1.790 - 1.8			Rock salt 1.516
	Benzene 1.501	Garnet, Almandine 1.760	Periclase 1.740	Variscite 1.550	Vodka 1.363	Garnet, Pyrope 1.73 - 1.76			Crown glass (pure) 1.50 - 1.54
	Beryl 1.577	Garnet, Almandite 1.790	Peridot 1.654	Vivianite 1.580	Water (0° C) 1.33346	Garnet, Rhodolite 1.740 - 1.770			Salt (NaCl) 1.544
	Beryllonite 1.553	Garnet, Andradite 1.820	Peristerite 1.525	Wardite 1.590	Water (100° C) 1.31766	Garnet, Tsavorite 1.739 - 1.744			Polycarbonate 1.584 - 1.586
	Brazilianite 1.603	Garnet, Demantoid 1.880	Petalite 1.502	Water (gas) 1.000261	Water (20° C) 1.33283	Garnet, Uvarovite 1.74 - 1.87			PMMA 1.4893 - 1.4899
	Bromine (liq) 1.661	Garnet, Grossular 1.738	Phenakite 1.650	Water 100'C 1.31819	Whisky 1.356	Hauyn 1.490 - 1.505			PETg 1.57
	Bronze 1.18	Garnet, Hessonite 1.745	Phosgenite 2.117	Water 20'C 1.33335		Iolite 1.522 - 1.578			PET 1.5750
	Calcite 1.486	Garnet, Rhodolite 1.760	Plastic 1.460	Water 35'C 1.33157	Various household liquids	Jade, Jadeite 1.64 - 1.667			Flint glass (pure) 1.60 - 1.62
	Cancrinite 1.491	Garnet, Spessartite 1.810	Plexiglas 1.50	Willemite 1.690	Glycerin 1,367	Jade, Nephrite 1.600 - 1.641			Crown glass (impure) 1.485 - 1.755
	Carbon Dioxide 1.000449	Gaylussite 1.517	Polystyrene 1.55	Witherite 1.532	All Purpose Orange Cleaner 1,293	Jet 1.660			Bromine 1.661
	Carbon Disulfide 1.628	Glass 1.51714	Prase 1.540	Wulfenite 2.300	Degreaser 1.377	Kunzite 1.660 - 1.676			Flint glass (impure) 1.523 - 1.925
	Carbon Tetrachloride 1.460	Glass, Albite 1.4890	Prasiolite 1.540	Zincite 2.010	Shower Gel 1.51	Labradorite 1.560 - 1.572			Cubic zirconia 2.15 - 2.18
	Cassiterite 1.997	Glass, Crown 1.520	Prehnite 1.610	Zircon, High 1.960	Baby Wash 1.26	Lapis Lazuli 1.50 - 1.55			Diamond 2.419
	Celestite 1.622	Glass, Crown, Zinc 1.517	Proustite 2.790	Zircon, Low 1.800		Moonstone 1.518 - 1.526			Moissanite 2.65 - 2.69
	Cerussite 1.804	Glass, Flint, Dense 1.66	Purpurite 1.840	Zirconia, Cubic 2.170	Morganite 1.585 - 1.594
	Ceylanite 1.770	Glass, Flint, Heaviest 1.89	Pyrite 1.810		Obsidian 1.50
	Chalcedony 1.530	Glass, Flint, Heavy 1.65548	Pyrope 1.740		Opal, Black 1.440 - 1.460
	Chalk 1.510	Glass, Flint, Lanthanum 1.80	Quartz 1.544		Opal, Fire 1.430 - 1.460
	Chalybite 1.630	Glass, Flint, Light 1.58038	Quartz, Fused 1.45843		Opal, White 1.440 - 1.460
	Chlorine (gas) 1.000768	Glass, Flint, Medium 1.62725	Rhodizite 1.690		Oregon Sunstone 1.560 - 1.572
	Chlorine (liq) 1.385	Glycerine 1.473	Rhodonite 1.735		Padparadja 1.760 - 1.773
	Chrome Green 2.4	Gold 0.47	Rock Salt 1.544		Peridot 1.635 - 1.690
	Chrome Red 2.42	Hambergite 1.559	Rubber, Natural 1.5191		Quartz 1.544 - 1.553
	Chrome Yellow 2.31	Hauynite 1.502	Ruby 1.760		Ruby 1.757 - 1.779
	Chromium 2.97	Helium 1.000036	Rutile 2.62		Sapphire 1.757 - 1.779
	Chrysoberyl 1.745	Hematite 2.940	Sanidine 1.522		Sapphire, Star 1.760 - 1.773
	Chrysocolla 1.500	Hemimorphite 1.614	Sapphire 1.760		Spessarite 1.79 - 1.81
	Chrysoprase 1.534	Hiddenite 1.655	Scapolite 1.540		Spinel 1.712 - 1.717
	Citrine 1.550	Howlite 1.586	Scapolite, Yellow 1.555		Spinel, Blue 1.712 - 1.747
	Clinozoisite 1.724	Hydrogen (gas) 1.000140	Scheelite 1.920		Spinel, Red 1.708 - 1.735
	Cobalt Blue 1.74	Hydrogen (liq) 1.0974	Selenium, Amorphous 2.92		Star Ruby 1.76 - 1.773
	Cobalt Green 1.97	Hypersthene 1.670	Serpentine 1.560		Tanzanite 1.690-1.7
	Cobalt Violet 1.71	Ice 1.309	Shell 1.530		Tanzanite 1.692 - 1.700
	Colemanite 1.586	Idocrase 1.713	Silicon 4.24		Topaz 1.607 - 1.627
	Copper 1.10	Iodine Crystal 3.34	Sillimanite 1.658		Topaz, Imperial 1.605-1.640
	Copper Oxide 2.705	Iolite 1.548	Silver 0.18		Tourmaline 1.603 - 1.655
	Coral 1.486	Iron 1.51	Sinhalite 1.699		Tourmaline, Blue 1.61 - 1.64
	Cordierite 1.540	Ivory 1.540	Smaragdite 1.608		Tourmaline, Catseye 1.61 - 1.64
	Corundum 1.766	Jade, Nephrite 1.610	Smithsonite 1.621		Tourmaline, Green 1.61 - 1.64
	Crocoite 2.310	Jadeite 1.665	Sodalite 1.483		Tourmaline, Paraiba 1.61 - 1.65
	Crystal 2.00	Jasper 1.540	Sodium Chloride 1.544		Tourmaline, Red 1.61 - 1.64
	Cuprite 2.850	Jet 1.660	Sphalerite 2.368		Zircon 1.777 - 1.987
		Kornerupine 1.665	Sphene 1.885		Zirconia, Cubic 2.173 - 2.21
		Kunzite 1.655	Spinel 1.712
		Kyanite 1.715	Spodumene 1.650