Link to post: http://forums.cgsociety.org/archive/index.php/t-513458.htm
l

Not vouching for accuracy, but this may be useful to someone. Maybe it  

would make a nice include or something.


Acetone 1.36
Actinolite 1.618
Agate 1.544
Agate, Moss 1.540
Air 1.0002926
Alcohol 1.329
Alexandrite 1.745
Aluminum 1.44
Amber 1.546
Amblygonite 1.611
Amethyst 1.544
Anatase 2.490
Andalusite 1.641
Anhydrite 1.571
Apatite 1.632
Apophyllite 1.536
Aquamarine 1.577
Aragonite 1.530
Argon 1.000281
Asphalt 1.635
Augelite 1.574
Axinite 1.675
Azurite 1.730
Barite 1.636
Barytocalcite 1.684
Benitoite 1.757
Benzene 1.501
Beryl 1.577
Beryllonite 1.553
Brazilianite 1.603
Bromine (liq) 1.661
Bronze 1.18
Calcite 1.486
Cancrinite 1.491
Carbon Dioxide (gas) 1.000449
Carbon Disulfide 1.628
Carbon Tetrachloride 1.460
Cassiterite 1.997
Celestite 1.622
Cerussite 1.804
Ceylanite 1.770
Chalcedony 1.530
Chalk 1.510
Chalybite 1.630
Chlorine (gas) 1.000768
Chlorine (liq) 1.385
Chrome Green 2.4
Chrome Red 2.42
Chrome Yellow 2.31
Chromium 2.97
Chrysoberyl 1.745
Chrysocolla 1.500
Chrysoprase 1.534
Citrine 1.550
Clinozoisite 1.724
Cobalt Blue 1.74
Cobalt Green 1.97
Cobalt Violet 1.71
Colemanite 1.586
Copper 1.10
Copper Oxide 2.705
Coral 1.486
Cordierite 1.540
Corundum 1.766
Crocoite 2.310
Crystal 2.00
Cuprite 2.850
Danburite 1.633
Diamond 2.417
Diopside 1.680
Dolomite 1.503
Dumortierite 1.686
Ebonite 1.66
Ekanite 1.600
Elaeolite 1.532
Emerald 1.576
Emerald, Synth flux 1.561
Emerald, Synth hydro 1.568
Enstatite 1.663
Epidote 1.733
Ethanol 1.36
Ethyl Alcohol 1.36
Euclase 1.652
Feldspar, Adventurine 1.532
Feldspar, Albite 1.525
Feldspar, Amazonite 1.525
Feldspar, Labradorite 1.565
Feldspar, Microcline 1.525
Feldspar, Oligoclase 1.539
Feldspar, orthoclase 1.525
Fluoride 1.56
Fluorite 1.434
Formica 1.47
Garnet, Almandine 1.760
Garnet, Almandite 1.790
Garnet, Andradite 1.820
Garnet, Demantoid 1.880
Garnet, Grossular 1.738
Garnet, Hessonite 1.745
Garnet, Rhodolite 1.760
Garnet, Spessartite 1.810
Gaylussite 1.517
Glass 1.51714
Glass, Albite 1.4890
Glass, Crown 1.520
Glass, Crown, Zinc 1.517
Glass, Flint, Dense 1.66
Glass, Flint, Heaviest 1.89
Glass, Flint, Heavy 1.65548
Glass, Flint, Lanthanum 1.80
Glass, Flint, Light 1.58038
Glass, Flint, Medium 1.62725
Glycerine 1.473
Gold 0.47
Hambergite 1.559
Hauynite 1.502
Helium 1.000036
Hematite 2.940
Hemimorphite 1.614
Hiddenite 1.655
Howlite 1.586
Hydrogen (gas) 1.000140
Hydrogen (liq) 1.0974
Hypersthene 1.670
Ice 1.309
Idocrase 1.713
Iodine Crystal 3.34
Iolite 1.548
Iron 1.51
Ivory 1.540
Jade, Nephrite 1.610
Jadeite 1.665
Jasper 1.540
Jet 1.660
Kornerupine 1.665
Kunzite 1.655
Kyanite 1.715
Lapis Gem 1.500
Lapis Lazuli 1.61
Lazulite 1.615
Lead 2.01
Leucite 1.509
Magnesite 1.515
Malachite 1.655
Meerschaum 1.530
Mercury (liq) 1.62
Methanol 1.329
Moldavite 1.500
Moonstone, Adularia 1.525
Moonstone, Albite 1.535
Natrolite 1.480
Nephrite 1.600
Nitrogen (gas) 1.000297
Nitrogen (liq) 1.2053
Nylon 1.53
Obsidian 1.489
Olivine 1.670
Onyx 1.486
Opal 1.450
Oxygen (gas) 1.000276
Oxygen (liq) 1.221
Painite 1.787
Pearl 1.530
Periclase 1.740
Peridot 1.654
Peristerite 1.525
Petalite 1.502
Phenakite 1.650
Phosgenite 2.117
Plastic 1.460
Plexiglas 1.50
Polystyrene 1.55
Prase 1.540
Prasiolite 1.540
Prehnite 1.610
Proustite 2.790
Purpurite 1.840
Pyrite 1.810
Pyrope 1.740
Quartz 1.544
Quartz, Fused 1.45843
Rhodizite 1.690
Rhodonite 1.735
Rock Salt 1.544
Rubber, Natural 1.5191
Ruby 1.760
Rutile 2.62
Sanidine 1.522
Sapphire 1.760
Scapolite 1.540
Scapolite, Yellow 1.555
Scheelite 1.920
Selenium, Amorphous 2.92
Serpentine 1.560
Shell 1.530
Silicon 4.24
Sillimanite 1.658
Silver 0.18
Sinhalite 1.699
Smaragdite 1.608
Smithsonite 1.621
Sodalite 1.483
Sodium Chloride 1.544
Sphalerite 2.368
Sphene 1.885
Spinel 1.712
Spodumene 1.650
Staurolite 1.739
Steatite 1.539
Steel 2.50
Stichtite 1.520
Strontium Titanate 2.410
Styrofoam 1.595
Sulphur 1.960
Synthetic Spinel 1.730
Taaffeite 1.720
Tantalite 2.240
Tanzanite 1.691
Teflon 1.35
Thomsonite 1.530
Tiger eye 1.544
Topaz 1.620
Topaz, Blue 1.610
Topaz, Pink 1.620
Topaz, White 1.630
Topaz, Yellow 1.620
Tourmaline 1.624
Tremolite 1.600
Tugtupite 1.496
Turpentine 1.472
Turquoise 1.610
Ulexite 1.490
Uvarovite 1.870
Variscite 1.550
Vivianite 1.580
Wardite 1.590
Water (gas) 1.000261
Water 100'C 1.31819
Water 20'C 1.33335
Water 35'C (Room temp) 1.33157
Willemite 1.690
Witherite 1.532
Wulfenite 2.300
Zincite 2.010
Zircon, High 1.960
Zircon, Low 1.800
Zirconia, Cubic 2.170

Liquids
Acetone 1.36
Alcohol, Ethyl (grain) 1.36
Alcohol, Methyl (wood) 1.329
Beer 1.345
Carbonated Beverages 1.34 - 1.356
Fruit Juice
Chlorine (liq) 1.385
Cranberry Juice (25%) 1.351
Glycerin 1.473
Honey, 13% water content 1.504
Honey, 17% water content 1.494
Honey, 21% water content 1.484
Ice 1.309
Milk 1.35
Oil, Clove 1.535
Oil, Lemon 1.481
Oil, Neroli 1.482
Oil, Orange 1.473
Oil, Safflower 1.466
Oil, vegetable (50� C) 1.47
Oil of Wintergreen 1.536
Rum, White 1.361
Shampoo 1.362
Sugar Solution 30% 1.38
Sugar Solution 80% 1.49
Turpentine 1.472
Vodka 1.363
Water (0� C) 1.33346
Water (100� C) 1.31766
Water (20� C) 1.33283
Whisky 1.356

Minerals & Gemstones
Alexandrite 1.746 - 1.755
Almandine 1.75 - 1.83
Amber 1.539 - 1.545
Amethyst 1.532 - 1.554
Ammolite 1.52 -1.68
Andalusite 1.629 - 1.650
Apatite 1.632 - 1.42
Aquamarine 1.567-1.590
Axenite 1.674 - 1.704
Beryl 1.57 - 1.60
Beryl, Red 1.570 - 1.598
Chalcedony 1.544 - 1.553
Chrome Tourmaline, 1.61 - 1.64
Citrine 1.532 - 1.554
Clinohumite 1.625 - 1.675
Coral 1.486 - 1.658
Crystal 2.000
Crysoberyl, Catseye 1.746 - 1.755
Danburite 1.627 - 1.641
Diamond 2.417
Emerald 1.560 - 1.605
Emerald Catseye 1.560 - 1.605
Flourite 1.434
Garnet, Andradite 1.88 - 1.94
Garnet, Demantiod 1.880 - 1.9
Garnet, Mandarin 1.790 - 1.8
Garnet, Pyrope 1.73 - 1.76
Garnet, Rhodolite 1.740 - 1.770
Garnet, Tsavorite 1.739 - 1.744
Garnet, Uvarovite 1.74 - 1.87
Hauyn 1.490 - 1.505
Iolite 1.522 - 1.578
Jade, Jadeite 1.64 - 1.667
Jade, Nephrite 1.600 - 1.641
Jet 1.660
Kunzite 1.660 - 1.676
Labradorite 1.560 - 1.572
Lapis Lazuli 1.50 - 1.55
Moonstone 1.518 - 1.526
Morganite 1.585 - 1.594
Obsidian 1.50
Opal, Black 1.440 - 1.460
Opal, Fire 1.430 - 1.460
Opal, White 1.440 - 1.460
Oregon Sunstone 1.560 - 1.572
Padparadja 1.760 - 1.773
Peridot 1.635 - 1.690
Quartz 1.544 - 1.553
Ruby 1.757 - 1.779
Sapphire 1.757 - 1.779
Sapphire, Star 1.760 - 1.773
Spessarite 1.79 - 1.81
Spinel 1.712 - 1.717
Spinel, Blue 1.712 - 1.747
Spinel, Red 1.708 - 1.735
Star Ruby 1.76 - 1.773
Tanzanite 1.690-1.7
Tanzanite 1.692 - 1.700
Topaz 1.607 - 1.627
Topaz, Imperial 1.605-1.640
Tourmaline 1.603 - 1.655
Tourmaline, Blue 1.61 - 1.64
Tourmaline, Catseye 1.61 - 1.64
Tourmaline, Green 1.61 - 1.64
Tourmaline, Paraiba 1.61 - 1.65
Tourmaline, Red 1.61 - 1.64
Zircon 1.777 - 1.987
Zirconia, Cubic 2.173 - 2.21

Transparent materials
Eye, Aqueous humor 1.33
Eye, Cornea 1.38
Eye, Lens 1.41
Eye, Vitreous humor 1.34
Glass, Arsenic Trisulfide 2.04
Glass, Crown (common) 1.52
Glass, Flint, 29% lead 1.569
Glass, Flint, 55% lead 1.669
Glass, Flint, 71% lead 1.805
Glass, Fused Silica 1.459
Glass, Pyrex 1.474
Lucite 1.495
Nylon 1.53
Obsidian 1.50
Plastic 1.460 - 1.55
Plexiglas 1.488
Salt 1.516

Metals
Aluminum 1.39
Copper 2.43
Gold 0.166
Mylar 1.65
Nickel 1.08
Platinum 2.33
Silver 1.35
Titanium 2.16

Vacuum 1.0000
Air 1.0003
Ice 1.31
Water 1.333
Ethyl Alcohol 1.36
Plexiglas 1.51
Crown Glass 1.52
Light Flint Glass 1.58
Dense Flint Glass 1.66
Zircon 1.923
Diamond 2.417
Rutile 2.907
Gallium phosphide 3.50

Various household liquids
Glycerin 1,367
All Purpose Orange Cleaner (Pathmark Brand) 1,293
Degreaser 1.377
Shower Gel 1.51
Baby Wash 1.26

Vacuum 1 (exactly)
Helium 1.000036
Air @ STP 1.0002926
Carbon dioxide 1.00045
Water Ice 1.31
Liquid Water (20�C) 1.332986
Cryolite 1.338
Acetone 1.36
Ethanol 1.36
Teflon 1.35 - 1.38
Glycerol 1.4729
Acrylic glass 1.490 - 1.492
Rock salt 1.516
Crown glass (pure) 1.50 - 1.54
Salt (NaCl) 1.544
Polycarbonate 1.584 - 1.586
PMMA 1.4893 - 1.4899
PETg 1.57
PET 1.5750
Flint glass (pure) 1.60 - 1.62
Crown glass (impure) 1.485 - 1.755
Bromine 1.661
Flint glass (impure) 1.523 - 1.925
Cubic zirconia 2.15 - 2.18
Diamond 2.419
Moissanite 2.65 - 2.69
Cinnabar (Mercury sulfide) 3.02
Gallium(III) phosphide 3.5
Gallium(III) arsenide 3.927
Silicon 4.01

Acetone 1.36
Actinolite 1.618
Agalmatoite 1.550
Agate 1.544
Agate, Moss 1.540
Air 1.0002926
Alcohol 1.329
Alexandrite 1.745
Aluminum 1.44
Amber 1.546
Amblygonite 1.611
Amethyst 1.544
Anatase 2.490
Andalusite 1.641
Anhydrite 1.571
Apatite 1.632
Apophyllite 1.536
Aquamarine 1.577
Aragonite 1.530
Argon 1.000281
Asphalt 1.635
Augelite 1.574
Axinite 1.675
Azurite 1.730
Barite 1.636
Barytocalcite 1.684
Benitoite 1.757
Benzene 1.501
Beryl 1.577
Beryllonite 1.553
Brazilianite 1.603
Bromine (liq) 1.661
Bronze 1.18
Brownite 1.567
Calcite 1.486
Calspar 1.486
Cancrinite 1.491
Carbon Dioxide (gas) 1.000449
Carbon Disulfide 1.628
Carbon Tetrachloride 1.460
Cassiterite 1.997
Celestite 1.622
Cerussite 1.804
Ceylanite 1.770
Chalcedony 1.530
Chalk 1.510
Chalybite 1.630
Chlorine (gas) 1.000768
Chlorine (liq) 1.385
Chrome Green 2.4
Chrome Red 2.42
Chrome Yellow 2.31
Chromium 2.97
Chrysoberyl 1.745
Chrysocolla 1.500
Chrysoprase 1.534
Citrine 1.550
Clinozoisite 1.724
Cobalt Blue 1.74
Cobalt Green 1.97
Cobalt Violet 1.71
Colemanite 1.586
Copper 1.10
Copper Oxide 2.705
Coral 1.486
Cordierite 1.540
Corundum 1.766
Crocoite 2.310
Crystal 2.00
Cuprite 2.850
Danburite 1.633
Diamond 2.417
Diopside 1.680
Dolomite 1.503
Dumortierite 1.686
Ebonite 1.66
Ekanite 1.600
Elaeolite 1.532
Emerald 1.576
Emerald, Synth flux 1.561
Emerald, Synth hydro 1.568
Enstatite 1.663
Epidote 1.733
Ethanol 1.36
Ethyl Alcohol 1.36
Euclase 1.652
Fabulite 2.409
Feldspar, Adventurine 1.532
Feldspar, Albite 1.525
Feldspar, Amazonite 1.525
Feldspar, Labradorite 1.565
Feldspar, Microcline 1.525
Feldspar, Oligoclase 1.539
Feldspar, Orthoclase 1.525
Fluoride 1.56
Fluorite 1.434
Formica 1.47
Garnet, Almandine 1.760
Garnet, Almandite 1.790
Garnet, Andradite 1.820
Garnet, Demantoid 1.880
Garnet, Grossular 1.738
Garnet, Hessonite 1.745
Garnet, Rhodolite 1.760
Garnet, Spessartite 1.810
Gaylussite 1.517
Glass 1.51714
Glass, Albite 1.4890
Glass, Crown 1.520
Glass, Crown, Zinc 1.517
Glass, Flint, Dense 1.66
Glass, Flint, Heaviest 1.89
Glass, Flint, Heavy 1.65548
Glass, Flint, Lanthanum 1.80
Glass, Flint, Light 1.58038
Glass, Flint, Medium 1.62725
Glycerine 1.473
Gold 0.47
Hambergite 1.559
Hauynite 1.502
Helium 1.000036
Hematite 2.940
Hemimorphite 1.614
Hiddenite 1.655
Howlite 1.586
Hydrogen (gas) 1.000140
Hydrogen (liq) 1.0974
Hypersthene 1.670
Ice 1.309
Idocrase 1.713
Iodine Crystal 3.34
Iolite 1.548
Iron 1.51
Ivory 1.540
Jade, Nephrite 1.610
Jadeite 1.665
Jasper 1.540
Jet 1.660
Kornerupine 1.665
Kunzite 1.655
Kyanite 1.715
Lapis Gem 1.500
Lapis Lazuli 1.61
Lazulite 1.615
Lead 2.01
Leucite 1.509
Magnesite 1.515
Malachite 1.655
Meerschaum 1.530
Mercury (liq) 1.62
Methanol 1.329
Moldavite 1.500
Moonstone, Adularia 1.525
Moonstone, Albite 1.535
Natrolite 1.480
Nephrite 1.600
Nitrogen (gas) 1.000297
Nitrogen (liq) 1.2053
Nylon 1.53
Obsidian 1.489
Olivine 1.670
Onyx 1.486
Opal 1.450
Oxygen (gas) 1.000276
Oxygen (liq) 1.221
Painite 1.787
Pearl 1.530
Periclase 1.740
Peridot 1.654
Peristerite 1.525
Petalite 1.502
Phenakite 1.650
Phosgenite 2.117
Plastic 1.460
Plexiglas 1.50
Polystyrene 1.55
Prase 1.540
Prasiolite 1.540
Prehnite 1.610
Proustite 2.790
Purpurite 1.840
Pyrite 1.810
Pyrope 1.740
Quartz 1.544
Quartz, Fused 1.45843
Rhodizite 1.690
Rhodochrisite 1.600
Rhodonite 1.735
Rock Salt 1.544
Rubber, Natural 1.5191
Ruby 1.760
Rutile 2.62
Sanidine 1.522
Sapphire 1.760
Scapolite 1.540
Scapolite, Yellow 1.555
Scheelite 1.920
Selenium, Amorphous 2.92
Serpentine 1.560
Shell 1.530
Silicon 4.24
Sillimanite 1.658
Silver 0.18
Sinhalite 1.699
Smaragdite 1.608
Smithsonite 1.621
Sodalite 1.483
Sodium Chloride 1.544
Sphalerite 2.368
Sphene 1.885
Spinel 1.712
Spodumene 1.650
Staurolite 1.739
Steatite 1.539
Steel 2.50
Stichtite 1.520
Strontium Titanate 2.410
Styrofoam 1.595
Sulphur 1.960
Synthetic Spinel 1.730
Taaffeite 1.720
Tantalite 2.240
Tanzanite 1.691
Teflon 1.35
Thomsonite 1.530
Tiger eye 1.544
Topaz 1.620
Topaz, Blue 1.610
Topaz, Pink 1.620
Topaz, White 1.630
Topaz, Yellow 1.620
Tourmaline 1.624
Tremolite 1.600
Tugtupite 1.496
Turpentine 1.472
Turquoise 1.610
Ulexite 1.490
Uvarovite 1.870
Variscite 1.550
Vivianite 1.580
Wardite 1.590
Water (gas) 1.000261
Water 100'C 1.31819
Water 20'C 1.33335
Water 35'C (Room temp) 1.33157
Willemite 1.690
Witherite 1.532
Wulfenite 2.300
Zincite 2.010
Zircon, High 1.960
Zircon, Low 1.800
Zirconia, Cubic 2.170

Sorted by refractive index:
Silver 0.18
Gold 0.47
Helium 1.000036
Hydrogen (gas) 1.00014
Water (gas) 1.000261
Oxygen (gas) 1.000276
Argon 1.000281
Air 1.0002926
Nitrogen (gas) 1.000297
Carbon Dioxide (gas) 1.000449
Chlorine (gas) 1.000768
Hydrogen (liq) 1.0974
Copper 1.1
Bronze 1.18
Nitrogen (liq) 1.2053
Oxygen (liq) 1.221
Ice 1.309
Water 100'C 1.31819
Alcohol 1.329
Methanol 1.329
Water 35'C (Room temp) 1.33157
Water 20'C 1.33335
Teflon 1.35
Acetone 1.36
Ethanol 1.36
Ethyl Alcohol 1.36
Chlorine (liq) 1.385
Fluorite 1.434
Aluminum 1.44
Opal 1.45
Quartz, Fused 1.45843
Carbon Tetrachloride 1.46
Plastic 1.46
Formica 1.47
Turpentine 1.472
Glycerine 1.473
Natrolite 1.48
Sodalite 1.483
Calcite 1.486
Calspar 1.486
Coral 1.486
Onyx 1.486
Glass, Albite 1.489
Obsidian 1.489
Ulexite 1.49
Cancrinite 1.491
Tugtupite 1.496
Chrysocolla 1.5
Lapis Gem 1.5
Moldavite 1.5
Plexiglas 1.5
Benzene 1.501
Hauynite 1.502
Petalite 1.502
Dolomite 1.503
Leucite 1.509
Chalk 1.51
Iron 1.51
Magnesite 1.515
Gaylussite 1.517
Glass, Crown, Zinc 1.517
Glass 1.51714
Rubber, Natural 1.5191
Glass, Crown 1.52
Stichtite 1.52
Sanidine 1.522
Feldspar, Albite 1.525
Feldspar, Amazonite 1.525
Feldspar, Microcline 1.525
Feldspar, Orthoclase 1.525
Moonstone, Adularia 1.525
Peristerite 1.525
Aragonite 1.53
Chalcedony 1.53
Meerschaum 1.53
Nylon 1.53
Pearl 1.53
Shell 1.53
Thomsonite 1.53
Elaeolite 1.532
Feldspar, Adventurine 1.532
Witherite 1.532
Chrysoprase 1.534
Moonstone, Albite 1.535
Apophyllite 1.536
Feldspar, Oligoclase 1.539
Steatite 1.539
Agate, Moss 1.54
Cordierite 1.54
Ivory 1.54
Jasper 1.54
Prase 1.54
Prasiolite 1.54
Scapolite 1.54
Agate 1.544
Amethyst 1.544
Quartz 1.544
Rock Salt 1.544
Sodium Chloride 1.544
Tiger eye 1.544
Amber 1.546
Iolite 1.548
Agalmatoite 1.55
Citrine 1.55
Polystyrene 1.55
Variscite 1.55
Beryllonite 1.553
Scapolite, Yellow 1.555
Hambergite 1.559
Fluoride 1.56
Serpentine 1.56
Emerald, Synth flux 1.561
Feldspar, Labradorite 1.565
Brownite 1.567
Emerald, Synth hydro 1.568
Anhydrite 1.571
Augelite 1.574
Emerald 1.576
Aquamarine 1.577
Beryl 1.577
Vivianite 1.58
Glass, Flint, Light 1.58038
Colemanite 1.586
Howlite 1.586
Wardite 1.59
Styrofoam 1.595
Ekanite 1.6
Nephrite 1.6
Rhodochrisite 1.6
Tremolite 1.6
Brazilianite 1.603
Smaragdite 1.608
Jade, Nephrite 1.61
Lapis Lazuli 1.61
Prehnite 1.61
Topaz, Blue 1.61
Turquoise 1.61
Amblygonite 1.611
Hemimorphite 1.614
Lazulite 1.615
Actinolite 1.618
Mercury (liq) 1.62
Topaz 1.62
Topaz, Pink 1.62
Topaz, Yellow 1.62
Smithsonite 1.621
Celestite 1.622
Tourmaline 1.624
Glass, Flint, Medium 1.62725
Carbon Disulfide 1.628
Chalybite 1.63
Topaz, White 1.63
Apatite 1.632
Danburite 1.633
Asphalt 1.635
Barite 1.636
Andalusite 1.641
Phenakite 1.65
Spodumene 1.65
Euclase 1.652
Peridot 1.654
Hiddenite 1.655
Kunzite 1.655
Malachite 1.655
Glass, Flint, Heavy 1.65548
Sillimanite 1.658
Ebonite 1.66
Glass, Flint, Dense 1.66
Jet 1.66
Bromine (liq) 1.661
Enstatite 1.663
Jadeite 1.665
Kornerupine 1.665
Hypersthene 1.67
Olivine 1.67
Axinite 1.675
Diopside 1.68
Barytocalcite 1.684
Dumortierite 1.686
Rhodizite 1.69
Willemite 1.69
Tanzanite 1.691
Sinhalite 1.699
Cobalt Violet 1.71
Spinel 1.712
Idocrase 1.713
Kyanite 1.715
Taaffeite 1.72
Clinozoisite 1.724
Azurite 1.73
Synthetic Spinel 1.73
Epidote 1.733
Rhodonite 1.735
Silver 0.18
Gold 0.47
Helium 1.000036
Hydrogen (gas) 1.00014
Water (gas) 1.000261
Oxygen (gas) 1.000276
Argon 1.000281
Air 1.0002926
Nitrogen (gas) 1.000297
Carbon Dioxide (gas) 1.000449
Chlorine (gas) 1.000768
Hydrogen (liq) 1.0974
Copper 1.1
Bronze 1.18
Nitrogen (liq) 1.2053
Oxygen (liq) 1.221
Ice 1.309
Water 100'C 1.31819
Alcohol 1.329
Methanol 1.329
Water 35'C (Room temp) 1.33157
Water 20'C 1.33335
Teflon 1.35
Acetone 1.36
Ethanol 1.36
Ethyl Alcohol 1.36
Chlorine (liq) 1.385
Fluorite 1.434
Aluminum 1.44
Opal 1.45
Quartz, Fused 1.45843
Carbon Tetrachloride 1.46
Plastic 1.46
Formica 1.47
Turpentine 1.472
Glycerine 1.473
Natrolite 1.48
Sodalite 1.483
Calcite 1.486
Calspar 1.486
Coral 1.486
Onyx 1.486
Glass, Albite 1.489
Obsidian 1.489
Ulexite 1.49
Cancrinite 1.491
Tugtupite 1.496
Chrysocolla 1.5
Lapis Gem 1.5
Moldavite 1.5
Plexiglas 1.5
Benzene 1.501
Hauynite 1.502
Petalite 1.502
Dolomite 1.503
Leucite 1.509
Chalk 1.51
Iron 1.51
Magnesite 1.515
Gaylussite 1.517
Glass, Crown, Zinc 1.517
Glass 1.51714
Rubber, Natural 1.5191
Glass, Crown 1.52
Stichtite 1.52
Sanidine 1.522
Feldspar, Albite 1.525
Feldspar, Amazonite 1.525
Feldspar, Microcline 1.525
Feldspar, Orthoclase 1.525
Moonstone, Adularia 1.525
Peristerite 1.525
Aragonite 1.53
Chalcedony 1.53
Meerschaum 1.53
Nylon 1.53
Pearl 1.53
Shell 1.53
Thomsonite 1.53
Elaeolite 1.532
Feldspar, Adventurine 1.532
Witherite 1.532
Chrysoprase 1.534
Moonstone, Albite 1.535
Apophyllite 1.536
Feldspar, Oligoclase 1.539
Steatite 1.539
Agate, Moss 1.54
Cordierite 1.54
Ivory 1.54
Jasper 1.54
Prase 1.54
Prasiolite 1.54
Scapolite 1.54
Agate 1.544
Amethyst 1.544
Quartz 1.544
Rock Salt 1.544
Sodium Chloride 1.544
Tiger eye 1.544
Amber 1.546
Iolite 1.548
Agalmatoite 1.55
Citrine 1.55
Polystyrene 1.55
Variscite 1.55
Beryllonite 1.553
Scapolite, Yellow 1.555
Hambergite 1.559
Fluoride 1.56
Serpentine 1.56
Emerald, Synth flux 1.561
Feldspar, Labradorite 1.565
Brownite 1.567
Emerald, Synth hydro 1.568
Anhydrite 1.571
Augelite 1.574
Emerald 1.576
Aquamarine 1.577
Beryl 1.577
Vivianite 1.58
Glass, Flint, Light 1.58038
Colemanite 1.586
Howlite 1.586
Wardite 1.59
Styrofoam 1.595
Ekanite 1.6
Nephrite 1.6
Rhodochrisite 1.6
Tremolite 1.6
Brazilianite 1.603
Smaragdite 1.608
Jade, Nephrite 1.61
Lapis Lazuli 1.61
Prehnite 1.61
Topaz, Blue 1.61
Turquoise 1.61
Amblygonite 1.611
Hemimorphite 1.614
Lazulite 1.615
Actinolite 1.618
Mercury (liq) 1.62
Topaz 1.62
Topaz, Pink 1.62
Topaz, Yellow 1.62
Smithsonite 1.621
Celestite 1.622
Tourmaline 1.624
Glass, Flint, Medium 1.62725
Carbon Disulfide 1.628
Chalybite 1.63
Topaz, White 1.63
Apatite 1.632
Danburite 1.633
Asphalt 1.635
Barite 1.636
Andalusite 1.641
Phenakite 1.65
Spodumene 1.65
Euclase 1.652
Peridot 1.654
Hiddenite 1.655
Kunzite 1.655
Malachite 1.655
Glass, Flint, Heavy 1.65548
Sillimanite 1.658
Ebonite 1.66
Glass, Flint, Dense 1.66
Jet 1.66
Bromine (liq) 1.661
Enstatite 1.663
Jadeite 1.665
Kornerupine 1.665
Hypersthene 1.67
Olivine 1.67
Axinite 1.675
Diopside 1.68
Barytocalcite 1.684
Dumortierite 1.686
Rhodizite 1.69
Willemite 1.69
Tanzanite 1.691
Sinhalite 1.699
Cobalt Violet 1.71
Spinel 1.712
Idocrase 1.713
Kyanite 1.715
Taaffeite 1.72
Clinozoisite 1.724
Azurite 1.73
Synthetic Spinel 1.73
Epidote 1.733
Rhodonite 1.735
Garnet, Grossular 1.738
Staurolite 1.739
Cobalt Blue 1.74
Periclase 1.74
Pyrope 1.74
Alexandrite 1.745
Chrysoberyl 1.745
Garnet, Hessonite 1.745
Benitoite 1.757
Garnet, Almandine 1.76
Garnet, Rhodolite 1.76
Ruby 1.76
Sapphire 1.76
Corundum 1.766
Ceylanite 1.77
Painite 1.787
Garnet, Almandite 1.79
Glass, Flint, Lanthanum 1.8
Zircon, Low 1.8
Cerussite 1.804
Garnet, Spessartite 1.81
Pyrite 1.81
Garnet, Andradite 1.82
Purpurite 1.84
Uvarovite 1.87
Garnet, Demantoid 1.88
Sphene 1.885
Glass, Flint, Heaviest 1.89
Scheelite 1.92
Sulphur 1.96
Zircon, High 1.96
Cobalt Green 1.97
Cassiterite 1.997
Crystal 2
Lead 2.01
Zincite 2.01
Phosgenite 2.117
Zirconia, Cubic 2.17
Tantalite 2.24
Wulfenite 2.3
Chrome Yellow 2.31
Crocoite 2.31
Sphalerite 2.368
Chrome Green 2.4
Fabulite 2.409
Strontium Titanate 2.41
Diamond 2.417
Chrome Red 2.42
Anatase 2.49
Steel 2.5
Rutile 2.62
Copper Oxide 2.705
Proustite 2.79
Cuprite 2.85
Selenium, Amorphous 2.92
Hematite 2.94
Chromium 2.97
Iodine Crystal 3.34
Silicon 4.24

Almandine 1.830
Andradite 1.887
Apatite 1.624- 1.667
Aragonite 1.530 - 1.686
Barite 1.636 - 1.648
Beryl 1.565 - 1.598
Calcite 1.486 - 1.740
Cerussite 1.804 - 2.079
Chrysoberyl 1.746 - 1.756
Corundum 1.759 - 1.772
Diamond 2.418
Fluorite 1.434
Grossularite 1.734
Gypsum 1.519 - 1.531
Halite 1.544
Microcline 1.514 - 1.539
Olivine 1.63 - 1.88
Opal 1.41 - 1.46
Quartz 1.544 - 1.553
Rhodochrosite 1.597 - 1.816
Rutile 2.605 - 2.901
Scapolite 1.546 - 1.600
Sodalite 1.483 - 1.487
Spessartine 1.800
Sphalerite 2.369
Sphene 1.843 - 2.110
Spinel 1.719
Topaz 1.606 - 1.638
Tourmaline 1.635 - 1.675
Zircon 1.923 - 2.015

Table 1: Index of refraction of water as a
function of wave length and water temperature.
----------------------------------------------
Wave Length
(Angstroms) T=10 C T=20 C T=30 C

7065 1.3307 1.3300 1.3290
5893 1.3337 1.3330 1.3319
5016 1.3371 1.3364 1.3353
4047 1.3435 1.3427 1.3417

Vaccuum 1.000000
Helium 1.000036
Hydrogen 1.000140
Oxygen 1.000276
Argon 1.000281
Air 1.0002926
Nitrogen 1.000297
Carbon Dioxide 1.000449
Liquid Hydrogen 1.0974
Liquid Nitrogen 1.2053
Water at 00C 1.309
Water at 1000C 1.31819
Alcohol 1.329
Water 350C 1.33157
Acetone 1.36
Ethyl Alcohol 1.36
Chlorine 1.385
Fluorite 1.434
Opal 1.450
Quartz 1.45843
Carbon Tetrachloride 1.460
Plastic 1.460
Turpentine 1.472
Glycerine 1.473
Plexiglass 1.50
Benzene 1.501
Glass 1.51714
Ruby 1.760
Sapphire 1.760
Sulphur 1.960
Crystal 2.00
Diamond 2.417
Steel 2.50
Silicon 4.24

Nylon 1.53
Obsidian 1.50
Plastic 1.460 - 1.55
Plexiglas 1.488
Salt 1.516
Glass, Flint, 29% lead 1.569
Glass, Flint, 55% lead 1.669
Glass, Flint, 71% lead 1.805
Glass, Fused Silica 1.459
Glass, Pyrex 1.474
Lucite 1.495
Acetone 1.36
Alcohol, Ethyl (grain) 1.36
Alcohol, Methyl (wood) 1.329
Beer 1.345
Carbonated Beverages 1.34 - 1.356
Fruit Juice
Chlorine (liq) 1.385
Cranberry Juice (25%) 1.351
Glycerin 1.473
Honey, 13% water content 1.504
Honey, 17% water content 1.494
Honey, 21% water content 1.484
Ice 1.309
Milk 1.35
Oil, Clove 1.535
Oil, Lemon 1.481
Oil, Neroli 1.482
Oil, Orange 1.473
Oil, Safflower 1.466
Oil, vegetable (50� C) 1.47
Oil of Wintergreen 1.536
Rum, White 1.361
Shampoo 1.362
Sugar Solution 30% 1.38
Sugar Solution 80% 1.49
Turpentine 1.472
Vodka 1.363
Water (0� C) 1.33346
Water (100� C) 1.31766
Water (20� C) 1.33283
Whisky 1.356
Aluminum 1.39
Copper 2.43
Gold 0.47
Mylar 1.65
Nickel 1.08
Platinum 2.33
Silver 1.35
Titanium 2.16
Agate 1.544 - 1.553
Alexandrite 1.746 - 1.755
Almandine 1.75 - 1.83
Amber 1.539 - 1.545
Amethyst 1.532 - 1.554
Ammolite 1.52 -1.68
Andalusite 1.629 - 1.650
Apatite 1.632 - 1.42
Aquamarine 1.567-1.590
Axenite 1.674 - 1.704
Beryl 1.57 - 1.60
Beryl, Red 1.570 - 1.598
Chalcedony 1.544 - 1.553
Chrome Tourmaline, 1.61 - 1.64
Citrine 1.532 - 1.554
Clinohumite 1.625 - 1.675
Coral 1.486 - 1.658
Crystal 2.000
Crysoberyl, Catseye 1.746 - 1.755
Danburite 1.627 - 1.641
Diamond 2.417
Emerald 1.560 - 1.605
Emerald Catseye 1.560 - 1.605
Flourite 1.434
Garnet, Grossular 1.72 - 1.80
Garnet, Andradite 1.88 - 1.94
Garnet, Demantiod 1.880 - 1.9
Garnet, Mandarin 1.790 - 1.8
Garnet, Pyrope 1.73 - 1.76
Garnet, Rhodolite 1.740 - 1.770
Garnet, Tsavorite 1.739 - 1.744
Garnet, Uvarovite 1.74 - 1.87
Hauyn 1.490 - 1.505
Iolite 1.522 - 1.578
Jade, Jadeite 1.64 - 1.667
Jade, Nephrite 1.600 - 1.641
Jet 1.660
Kunzite 1.660 - 1.676
Labradorite 1.560 - 1.572
Lapis Lazuli 1.50 - 1.55
Moonstone 1.518 - 1.526
Morganite 1.585 - 1.594
Obsidian 1.50
Opal, Black 1.440 - 1.460
Opal, Fire 1.430 - 1.460
Opal, White 1.440 - 1.460
Oregon Sunstone 1.560 - 1.572
Padparadja 1.760 - 1.773
Pearl 1.53 - 1.69
Peridot 1.635 - 1.690
Quartz 1.544 - 1.553
Ruby 1.757 - 1.779
Sapphire 1.757 - 1.779
Sapphire, Star 1.760 - 1.773
Spessarite 1.79 - 1.81
Spinel 1.712 - 1.717
Spinel, Blue 1.712 - 1.747
Spinel, Red 1.708 - 1.735
Star Ruby 1.76 - 1.773
Tanzanite 1.690-1.7
Tanzanite 1.692 - 1.700
Topaz 1.607 - 1.627
Topaz, Imperial 1.605-1.640
Tourmaline 1.603 - 1.655
Tourmaline, Blue 1.61 - 1.64
Tourmaline, Catseye 1.61 - 1.64
Tourmaline, Green 1.61 - 1.64
Tourmaline, Paraiba 1.61 - 1.65
Tourmaline, Red 1.61 - 1.64
Zircon 1.777 - 1.987
Zirconia, Cubic 2.173 - 2.21

Ian

-- 

Using Opera's revolutionary email client: http://www.opera.com/mail/

Post a reply to this message

Le 21/12/2010 05:07, [GDS|Entropy] a écrit :
> Link to post: http://forums.cgsociety.org/archive/index.php/t-513458.html
> 
> Not vouching for accuracy, but this may be useful to someone. Maybe it
> would make a nice include or something.
> 

Calling on accuracy: at least two different values for aluminum
(that's a US things too that is called aluminium in the other parts of
the world)

And refracting aluminium... just wondering.


-- 
Those who would give up Essential Liberty to purchase
a little Temporary Safety, deserve neither Liberty nor Safety.

Benjamin Franklin

Post a reply to this message

Am 21.12.2010 10:54, schrieb Le_Forgeron:

> And refracting aluminium... just wondering.

/All/ materials have an index of refraction, even metallic ones.

The value for alumin(i)um is definitely wrong though: Refractive indices 
of metals are actually complex numbers.

Post a reply to this message

Le 21/12/2010 13:31, clipka a écrit :
> Am 21.12.2010 10:54, schrieb Le_Forgeron:
> 
>> And refracting aluminium... just wondering.
> 
> /All/ materials have an index of refraction, even metallic ones.
> 
> The value for alumin(i)um is definitely wrong though: Refractive indices
> of metals are actually complex numbers.

I agree if we go with the electromagnetic model (including the various
polarisations) of propagation. (and while we are at it, let's handle
chromatics too, it's just the easy part before handling birefringence
and other natural phenomenons.)

But it's a bit hard to just use it with the ray model.

Moreover, the original list came from a computer graphic site, I'm
afraid it's yet some kind of magic numbers in a hidden formula to make
it look good as the material with the usual set of light. A bit like the
ratio of ambient/diffuse or similar properties of Povray.

We could probably make a list of
phong/phong_size/specular/roughness/crand  settings for each material...
it would have the same kind of magic numbers.

Just like we have the "metals.inc" with many chrome / silver / copper.

<joke>
I'm volunteering to test the precious gems rendering... please provide
me with many real big samples of diamond, rubies, sapphires, emerald,
... for comparisons. (samples won't be returned).
I can do precious metal too: gold, silver, copper,... need at least
100kg of each, thanks.


-- 
A good Manager will take you
through the forest, no mater what.
A Leader will take time to climb on a
Tree and say 'This is the wrong forest'.

Post a reply to this message

great!  Now we need the colors. ;)

IOR is also used in povray for fresnel reflection.

Post a reply to this message

>
> great!  Now we need the colors. ;)
>
> IOR is also used in povray for fresnel reflection.
>
>
>
We also need the dispersion values.

At first glance, the values /looks/ sane. Can't say for things like 
asphalt (this one should be variable acording to the exct recipie used), 
rubber and metals.


Alain

Post a reply to this message

Am 22.12.2010 00:53, schrieb Alain:

> We also need the dispersion values.

You might want to have a look at the include/ior.inc that should ship 
with 3.7 beta 41. It's by far not as exhaustive (being focused on gems 
and minerals), but does include dispersion information for most of the 
materials in POV-Ray-palatable format.

Post a reply to this message

Ok...I will respond to myself due to the sheer volume of comments. :)

I like what I have seen from the community...especially the more advanced  
concepts; however one must have a starting point before going that  
far...and this looks like it. I have lusted after many of these values for  
a long time...shame it never occurred to me to just Google it before  
now... >__<

1)	Where would we get the missing parameters accompanying these IOR values?
	1a)	It seems the povray params for these missing values should be an  
f(x); we have some data points already...is there a decent way to produce  
the governing function, so we 				could just write a program and dump the  
output? Given the pov model exists and is not randomly variable,  
determining the function should be possible...though I do not 					claim  
to be able to do so, at least without more research than my current  
project load would allow.
2)	How do we reach a consensus on the dubious IOR values?
3)	Regarding magic numbers....being a programmer I have an inherent  
dislike for such things...however, having a number of reference points  
extrinsic to any particular gfx package, 		with which my current known  
list of IOR values match up to, lends some credence to at least those  
values which are easily confirmed by multiple sources. Margins of error  
are a 		fact of life in any business unit, and if a software engineer  
should spend the time required to eliminate all of it, I seriously doubt  
he would get much programming done. 				Sometimes it is best to take what  
you have, make something with it, and correct the errors later. I don't  
like it either...but it is the way of life... :|

Ian

Post a reply to this message

For 1a):
	Perhaps the best place to start is a standard list of wide ranging (ior  
material 1=a, ior material g=f) values which can be validated  
independently. Then when we agree upon a list<T> where T=IOR values, we  
can plug those into the pov model to determine the phase space of the  
f(x)...and so as such may be able to reverse engineer the requisite  
diffuse, etc.. parameters. If such a model can be completed, where the  
f(x) can be defined, then any IOR x (and some parameters ??) should result  
in the corresponding missing values. I have used this tactic in the  
financial sector with great success...so...maybe a good strategy for this  
problem as well?

Ian

On Tue, 21 Dec 2010 21:55:41 -0500, [GDS|Entropy]  
<gdsHYentropyAThotmailDTcom> wrote:

> Ok...I will respond to myself due to the sheer volume of comments. :)
>
> I like what I have seen from the community...especially the more  
> advanced concepts; however one must have a starting point before going  
> that far...and this looks like it. I have lusted after many of these  
> values for a long time...shame it never occurred to me to just Google it  
> before now... >__<
>
> 1)	Where would we get the missing parameters accompanying these IOR  
> values?
> 	1a)	It seems the povray params for these missing values should be an  
> f(x); we have some data points already...is there a decent way to  
> produce the governing function, so we 				could just write a program and  
> dump the output? Given the pov model exists and is not randomly  
> variable, determining the function should be possible...though I do not  
> 					claim to be able to do so, at least without more research than my  
> current project load would allow.
> 2)	How do we reach a consensus on the dubious IOR values?
> 3)	Regarding magic numbers....being a programmer I have an inherent  
> dislike for such things...however, having a number of reference points  
> extrinsic to any particular gfx package, 		with which my current known  
> list of IOR values match up to, lends some credence to at least those  
> values which are easily confirmed by multiple sources. Margins of error  
> are a 		fact of life in any business unit, and if a software engineer  
> should spend the time required to eliminate all of it, I seriously doubt  
> he would get much programming done. 				Sometimes it is best to take  
> what you have, make something with it, and correct the errors later. I  
> don't like it either...but it is the way of life... :|
>
> Ian


-- 
Using Opera's revolutionary email client: http://www.opera.com/mail/

Post a reply to this message

Am 22.12.2010 03:55, schrieb [GDS|Entropy]:

> 1a) It seems the povray params for these missing values should be an
> f(x); we have some data points already...is there a decent way to
> produce the governing function, so we could just write a program and
> dump the output?

The actual surface properties depend on:

[ambient] the ambient illumination, so no material property here at all;

[specular/roughness,phong/phong_size,reflection] the surface structure, 
which may vary on how the material was processed (e.g. polished, sanded, 
whatever); not a material property in that sense either; and while the 
parameters also depend on the IOR, this is already accounted for by the 
fresnel model, at least for reflections;

[diffuse] the IOR, but also a set of wavelength dependent parameters: An 
absorption coefficient, a scattering coefficient, and - if you want to 
do it really precise - a scattering distribution. From these you can 
even compute the material pigment (and model subsurface scattering 
besides), but without these you cannot even compute the diffuse parameter.

So sorry, but no banana here.

Post a reply to this message