[
  {
    "name": "Acrylic glass",
    "min": 1.49,
    "max": 1.492
  },
  {
    "name": "Air",
    "min": 1.0,
    "max": 1.0
  },
  {
    "name": "Alcohol, Ethyl (grain)",
    "min": 1.36,
    "max": 1.36
  },
  {
    "name": "Aluminum",
    "min": 1.39,
    "max": 1.44
  },
  {
    "name": "Asphalt",
    "min": 1.635,
    "max": 1.635
  },
  {
    "name": "Beer",
    "min": 1.345,
    "max": 1.345
  },
  {
    "name": "Bronze",
    "min": 1.18,
    "max": 1.18
  },
  {
    "name": "Copper",
    "min": 1.1,
    "max": 2.43
  },
  {
    "name": "Crystal",
    "min": 2.0,
    "max": 2.0
  },
  {
    "name": "Diamond",
    "min": 2.418,
    "max": 2.418
  },
  {
    "name": "Emerald",
    "min": 1.56,
    "max": 1.605
  },
  {
    "name": "Eye, Lens",
    "min": 1.41,
    "max": 1.41
  },
  {
    "name": "Glass",
    "min": 1.5,
    "max": 1.5
  },
  {
    "name": "Glass, Pyrex",
    "min": 1.474,
    "max": 1.474
  },
  {
    "name": "Gold",
    "min": 0.47,
    "max": 0.47
  },
  {
    "name": "Ice",
    "min": 1.309,
    "max": 1.309
  },
  {
    "name": "Iron",
    "min": 2.95,
    "max": 2.95
  },
  {
    "name": "Ivory",
    "min": 1.54,
    "max": 1.54
  },
  {
    "name": "Lead",
    "min": 2.01,
    "max": 2.01
  },
  {
    "name": "Lucite",
    "min": 1.495,
    "max": 1.495
  },
  {
    "name": "Mercury (liquid)",
    "min": 1.62,
    "max": 1.62
  },
  {
    "name": "Milk",
    "min": 1.35,
    "max": 1.35
  },
  {
    "name": "Nickel",
    "min": 1.08,
    "max": 1.08
  },
  {
    "name": "Nylon",
    "min": 1.53,
    "max": 1.53
  },
  {
    "name": "Pearl",
    "min": 1.53,
    "max": 1.69
  },
  {
    "name": "Plastic",
    "min": 1.46,
    "max": 1.46
  },
  {
    "name": "Teflon",
    "min": 1.35,
    "max": 1.38
  },
  {
    "name": "Titanium",
    "min": 2.16,
    "max": 2.16
  },
  {
    "name": "Vodka",
    "min": 1.363,
    "max": 1.363
  },
  {
    "name": "Water (35 deg C)",
    "min": 1.325,
    "max": 1.325
  },
  {
    "name": "Acetone",
    "min": 1.36,
    "max": 1.36
  },
  {
    "name": "Acrylic glass",
    "min": 1.49,
    "max": 1.492
  },
  {
    "name": "Actinolite",
    "min": 1.618,
    "max": 1.618
  },
  {
    "name": "Agalmatoite",
    "min": 1.55,
    "max": 1.55
  },
  {
    "name": "Agate",
    "min": 1.544,
    "max": 1.553
  },
  {
    "name": "Agate, Moss",
    "min": 1.54,
    "max": 1.54
  },
  {
    "name": "Air",
    "min": 1.0,
    "max": 1.0
  },
  {
    "name": "Alcohol",
    "min": 1.329,
    "max": 1.329
  },
  {
    "name": "Alcohol, Ethyl (grain)",
    "min": 1.36,
    "max": 1.36
  },
  {
    "name": "Alcohol, Methyl (wood)",
    "min": 1.329,
    "max": 1.329
  },
  {
    "name": "Alexandrite",
    "min": 1.746,
    "max": 1.755
  },
  {
    "name": "Almandine",
    "min": 1.244,
    "max": 1.244
  },
  {
    "name": "Aluminum",
    "min": 1.244,
    "max": 1.244
  },
  {
    "name": "Aluminum Chloride",
    "min": 2.7,
    "max": 2.7
  },
  {
    "name": "Aluminum Oxide",
    "min": 1.665,
    "max": 1.665
  },
  {
    "name": "Amber",
    "min": 1.539,
    "max": 1.546
  },
  {
    "name": "Amblygonite",
    "min": 1.611,
    "max": 1.611
  },
  {
    "name": "Amethyst",
    "min": 1.532,
    "max": 1.554
  },
  {
    "name": "Ammolite",
    "min": 1.52,
    "max": 1.68
  },
  {
    "name": "Amorphous Selenium",
    "min": 2.92,
    "max": 2.92
  },
  {
    "name": "Anatase",
    "min": 2.49,
    "max": 2.49
  },
  {
    "name": "Andalusite",
    "min": 1.629,
    "max": 1.65
  },
  {
    "name": "Anhydrite",
    "min": 1.571,
    "max": 1.571
  },
  {
    "name": "Apatite",
    "min": 1.42,
    "max": 1.632
  },
  {
    "name": "Apophyllite",
    "min": 1.536,
    "max": 1.536
  },
  {
    "name": "Aquamarine",
    "min": 1.567,
    "max": 1.567
  },
  {
    "name": "Aragonite",
    "min": 1.53,
    "max": 1.53
  },
  {
    "name": "Argon",
    "min": 1.0,
    "max": 1.0
  },
  {
    "name": "Argonite",
    "min": 1.53,
    "max": 1.53
  },
  {
    "name": "Asphalt",
    "min": 1.635,
    "max": 1.635
  },
  {
    "name": "Augelite",
    "min": 1.574,
    "max": 1.574
  },
  {
    "name": "Axenite",
    "min": 1.674,
    "max": 1.704
  },
  {
    "name": "Axinite",
    "min": 1.675,
    "max": 1.675
  },
  {
    "name": "Azurite",
    "min": 1.73,
    "max": 1.73
  },
  {
    "name": "Barite",
    "min": 1.636,
    "max": 1.636
  },
  {
    "name": "Barytocalcite",
    "min": 1.684,
    "max": 1.684
  },
  {
    "name": "Beer",
    "min": 1.345,
    "max": 1.345
  },
  {
    "name": "Benitoite",
    "min": 1.757,
    "max": 1.757
  },
  {
    "name": "Benzene",
    "min": 1.501,
    "max": 1.501
  },
  {
    "name": "Beryl",
    "min": 1.57,
    "max": 1.6
  },
  {
    "name": "Beryl, Red",
    "min": 1.57,
    "max": 1.598
  },
  {
    "name": "Beryllonite",
    "min": 1.553,
    "max": 1.553
  },
  {
    "name": "Borax",
    "min": 1.446,
    "max": 1.446
  },
  {
    "name": "Brazilianite",
    "min": 1.603,
    "max": 1.603
  },
  {
    "name": "Bromine (liquid)",
    "min": 1.661,
    "max": 1.661
  },
  {
    "name": "Bronze",
    "min": 1.18,
    "max": 1.18
  },
  {
    "name": "Brownite",
    "min": 1.567,
    "max": 1.567
  },
  {
    "name": "Calcite",
    "min": 1.486,
    "max": 1.486
  },
  {
    "name": "Calspar",
    "min": 1.486,
    "max": 1.66
  },
  {
    "name": "Cancrinite",
    "min": 1.491,
    "max": 1.491
  },
  {
    "name": "Carbon Dioxide",
    "min": 1.0,
    "max": 1.0
  },
  {
    "name": "Carbon Disulfide",
    "min": 1.628,
    "max": 1.628
  },
  {
    "name": "Carbon Tetrachloride",
    "min": 1.46,
    "max": 1.46
  },
  {
    "name": "Carbonated Beverages",
    "min": 1.34,
    "max": 1.34
  },
  {
    "name": "Cassiterite",
    "min": 1.997,
    "max": 1.997
  },
  {
    "name": "Celestite",
    "min": 1.622,
    "max": 1.622
  },
  {
    "name": "Cerussite",
    "min": 1.804,
    "max": 1.804
  },
  {
    "name": "Ceylanite",
    "min": 1.77,
    "max": 1.77
  },
  {
    "name": "Chalcedony",
    "min": 1.544,
    "max": 1.553
  },
  {
    "name": "Chalk",
    "min": 1.51,
    "max": 1.51
  },
  {
    "name": "Chalybite",
    "min": 1.63,
    "max": 1.63
  },
  {
    "name": "Chlorine (gas)",
    "min": 1.001,
    "max": 1.001
  },
  {
    "name": "Chlorine (liquid)",
    "min": 1.385,
    "max": 1.385
  },
  {
    "name": "Chrome Green",
    "min": 2.4,
    "max": 2.4
  },
  {
    "name": "Chrome Red",
    "min": 2.42,
    "max": 2.42
  },
  {
    "name": "Chrome Tourmaline",
    "min": 1.61,
    "max": 1.64
  },
  {
    "name": "Chrome Yellow",
    "min": 2.31,
    "max": 2.31
  },
  {
    "name": "Chromium",
    "min": 2.97,
    "max": 2.97
  },
  {
    "name": "Chromium Oxide",
    "min": 2.705,
    "max": 2.705
  },
  {
    "name": "Chrysoberyl",
    "min": 1.745,
    "max": 1.745
  },
  {
    "name": "Chrysocolla",
    "min": 1.5,
    "max": 1.5
  },
  {
    "name": "Chrysoprase",
    "min": 1.534,
    "max": 1.534
  },
  {
    "name": "Cinnabar (Mecury Sulfide)",
    "min": 3.02,
    "max": 3.02
  },
  {
    "name": "Citrine",
    "min": 1.532,
    "max": 1.532
  },
  {
    "name": "Cleaner (all purpose)",
    "min": 1.293,
    "max": 1.293
  },
  {
    "name": "Clinohumite",
    "min": 1.625,
    "max": 1.625
  },
  {
    "name": "Clinozoisite",
    "min": 1.724,
    "max": 1.724
  },
  {
    "name": "Cobalt Blue",
    "min": 1.74,
    "max": 1.74
  },
  {
    "name": "Cobalt Green",
    "min": 1.97,
    "max": 1.97
  },
  {
    "name": "Cobalt Violet",
    "min": 1.71,
    "max": 1.71
  },
  {
    "name": "Colemanite",
    "min": 1.586,
    "max": 1.586
  },
  {
    "name": "Copper",
    "min": 1.1,
    "max": 2.43
  },
  {
    "name": "Copper Oxide",
    "min": 2.705,
    "max": 2.705
  },
  {
    "name": "Coral",
    "min": 1.486,
    "max": 1.486
  },
  {
    "name": "Cordierite",
    "min": 1.54,
    "max": 1.54
  },
  {
    "name": "Corundum",
    "min": 1.766,
    "max": 1.766
  },
  {
    "name": "Cranberry Juice (25%)",
    "min": 1.351,
    "max": 1.351
  },
  {
    "name": "Crocoite",
    "min": 2.31,
    "max": 2.31
  },
  {
    "name": "Cromite",
    "min": 2.16,
    "max": 2.16
  },
  {
    "name": "Crown Glass (impure)",
    "min": 1.485,
    "max": 1.755
  },
  {
    "name": "Crown Glass (pure)",
    "min": 1.5,
    "max": 1.54
  },
  {
    "name": "Cryolite",
    "min": 1.338,
    "max": 1.338
  },
  {
    "name": "Crysoberyl, Catseye",
    "min": 1.746,
    "max": 1.755
  },
  {
    "name": "Crystal",
    "min": 2.0,
    "max": 2.0
  },
  {
    "name": "Cubic Zirconia",
    "min": 2.15,
    "max": 2.18
  },
  {
    "name": "Cuprite",
    "min": 2.85,
    "max": 2.85
  },
  {
    "name": "Danburite",
    "min": 1.627,
    "max": 1.641
  },
  {
    "name": "Diamond",
    "min": 2.418,
    "max": 2.418
  },
  {
    "name": "Diopside",
    "min": 1.68,
    "max": 1.68
  },
  {
    "name": "Dolomite",
    "min": 1.503,
    "max": 1.503
  },
  {
    "name": "Dumortierite",
    "min": 1.686,
    "max": 1.686
  },
  {
    "name": "Ebonite",
    "min": 1.66,
    "max": 1.66
  },
  {
    "name": "Ekanite",
    "min": 1.6,
    "max": 1.6
  },
  {
    "name": "Elaeolite",
    "min": 1.532,
    "max": 1.532
  },
  {
    "name": "Emerald",
    "min": 1.56,
    "max": 1.605
  },
  {
    "name": "Emerald Catseye",
    "min": 1.56,
    "max": 1.605
  },
  {
    "name": "Emerald, Synth Flux",
    "min": 1.561,
    "max": 1.561
  },
  {
    "name": "Emerald, Synth Hydro",
    "min": 1.568,
    "max": 1.568
  },
  {
    "name": "Enstatite",
    "min": 1.663,
    "max": 1.663
  },
  {
    "name": "Epidote",
    "min": 1.733,
    "max": 1.733
  },
  {
    "name": "Ethanol",
    "min": 1.36,
    "max": 1.36
  },
  {
    "name": "Ethyl Alcohol",
    "min": 1.36,
    "max": 1.36
  },
  {
    "name": "Euclase",
    "min": 1.652,
    "max": 1.652
  },
  {
    "name": "Eye, Aqueous Humor",
    "min": 1.33,
    "max": 1.33
  },
  {
    "name": "Eye, Cornea",
    "min": 1.38,
    "max": 1.38
  },
  {
    "name": "Eye, Lens",
    "min": 1.41,
    "max": 1.41
  },
  {
    "name": "Eye, Vitreous Humor",
    "min": 1.34,
    "max": 1.34
  },
  {
    "name": "Fabulite",
    "min": 2.409,
    "max": 2.409
  },
  {
    "name": "Feldspar, Adventurine",
    "min": 1.532,
    "max": 1.532
  },
  {
    "name": "Feldspar, Albite",
    "min": 1.525,
    "max": 1.525
  },
  {
    "name": "Feldspar, Amazonite",
    "min": 1.525,
    "max": 1.525
  },
  {
    "name": "Feldspar, Labrodorite",
    "min": 1.565,
    "max": 1.565
  },
  {
    "name": "Feldspar, Microcline",
    "min": 1.525,
    "max": 1.525
  },
  {
    "name": "Feldspar, Oligoclase",
    "min": 1.539,
    "max": 1.539
  },
  {
    "name": "Feldspar, Orthoclase",
    "min": 1.525,
    "max": 1.525
  },
  {
    "name": "Flint Glass (impure)",
    "min": 1.523,
    "max": 1.925
  },
  {
    "name": "Flint Glass (pure)",
    "min": 1.6,
    "max": 1.62
  },
  {
    "name": "Flourite",
    "min": 1.433,
    "max": 1.433
  },
  {
    "name": "Fluoride",
    "min": 1.56,
    "max": 1.56
  },
  {
    "name": "Fluorite",
    "min": 1.434,
    "max": 1.434
  },
  {
    "name": "Formica",
    "min": 1.47,
    "max": 1.47
  },
  {
    "name": "Fused Quartz",
    "min": 1.46,
    "max": 1.46
  },
  {
    "name": "Gallium(III) Arsenide",
    "min": 3.927,
    "max": 3.927
  },
  {
    "name": "Gallium(III) Phosphide",
    "min": 3.5,
    "max": 3.5
  },
  {
    "name": "Garnet, Almandine",
    "min": 1.76,
    "max": 1.76
  },
  {
    "name": "Garnet, Almandite",
    "min": 1.79,
    "max": 1.79
  },
  {
    "name": "Garnet, Andradite",
    "min": 1.82,
    "max": 1.82
  },
  {
    "name": "Garnet, Demantiod",
    "min": 1.88,
    "max": 1.9
  },
  {
    "name": "Garnet, Grossular",
    "min": 1.72,
    "max": 1.8
  },
  {
    "name": "Garnet, Hessonite",
    "min": 1.745,
    "max": 1.745
  },
  {
    "name": "Garnet, Mandarin",
    "min": 1.79,
    "max": 1.8
  },
  {
    "name": "Garnet, Pyrope",
    "min": 1.73,
    "max": 1.76
  },
  {
    "name": "Garnet, Rhodolite",
    "min": 1.74,
    "max": 1.77
  },
  {
    "name": "Garnet, Spessartite",
    "min": 1.81,
    "max": 1.81
  },
  {
    "name": "Garnet, Tsavorite",
    "min": 1.739,
    "max": 1.744
  },
  {
    "name": "Garnet, Uvarovite",
    "min": 1.74,
    "max": 1.87
  },
  {
    "name": "Gaylussite",
    "min": 1.517,
    "max": 1.517
  },
  {
    "name": "Glass",
    "min": 1.5,
    "max": 1.5
  },
  {
    "name": "Glass, Albite",
    "min": 1.489,
    "max": 1.489
  },
  {
    "name": "Glass, Arsenic Trisulfide",
    "min": 2.04,
    "max": 2.04
  },
  {
    "name": "Glass, Crown",
    "min": 1.52,
    "max": 1.52
  },
  {
    "name": "Glass, Crown, Zinc",
    "min": 1.517,
    "max": 1.517
  },
  {
    "name": "Glass, Flint, 29% lead",
    "min": 1.569,
    "max": 1.569
  },
  {
    "name": "Glass, Flint, 55% lead",
    "min": 1.669,
    "max": 1.669
  },
  {
    "name": "Glass, Flint, 71% lead",
    "min": 1.805,
    "max": 1.805
  },
  {
    "name": "Glass, Flint, Dense",
    "min": 1.66,
    "max": 1.66
  },
  {
    "name": "Glass, Flint, Heaviest",
    "min": 1.89,
    "max": 1.89
  },
  {
    "name": "Glass, Flint, Heavy",
    "min": 1.655,
    "max": 1.655
  },
  {
    "name": "Glass, Flint, Lanthanum",
    "min": 1.8,
    "max": 1.8
  },
  {
    "name": "Glass, Flint, Light",
    "min": 1.58,
    "max": 1.58
  },
  {
    "name": "Glass, Flint, Medium",
    "min": 1.627,
    "max": 1.627
  },
  {
    "name": "Glass, Fused Silica",
    "min": 1.459,
    "max": 1.459
  },
  {
    "name": "Glass, Pyrex",
    "min": 1.474,
    "max": 1.474
  },
  {
    "name": "Glycerine",
    "min": 1.473,
    "max": 1.473
  },
  {
    "name": "Glycerol",
    "min": 1.473,
    "max": 1.473
  },
  {
    "name": "Gold",
    "min": 0.47,
    "max": 0.47
  },
  {
    "name": "Gypsium",
    "min": 1.519,
    "max": 1.519
  },
  {
    "name": "Hambergite",
    "min": 1.559,
    "max": 1.559
  },
  {
    "name": "Hauyn",
    "min": 1.49,
    "max": 1.505
  },
  {
    "name": "Hauynite",
    "min": 1.502,
    "max": 1.502
  },
  {
    "name": "Heaviest Flint Glass",
    "min": 1.89,
    "max": 1.89
  },
  {
    "name": "Heavy Flint Glass",
    "min": 1.65,
    "max": 1.65
  },
  {
    "name": "Helium",
    "min": 1.0,
    "max": 1.0
  },
  {
    "name": "Hematite",
    "min": 2.94,
    "max": 2.94
  },
  {
    "name": "Hemimorphite",
    "min": 1.614,
    "max": 1.614
  },
  {
    "name": "Hiddenite",
    "min": 1.655,
    "max": 1.655
  },
  {
    "name": "Honey, 13% water content",
    "min": 1.504,
    "max": 1.504
  },
  {
    "name": "Honey, 17% water content",
    "min": 1.494,
    "max": 1.494
  },
  {
    "name": "Honey, 21% water content",
    "min": 1.484,
    "max": 1.484
  },
  {
    "name": "Howlite",
    "min": 1.586,
    "max": 1.586
  },
  {
    "name": "Hydrogen (gas)",
    "min": 1.0,
    "max": 1.0
  },
  {
    "name": "Hydrogen (liquid)",
    "min": 1.097,
    "max": 1.097
  },
  {
    "name": "Hypersthene",
    "min": 1.67,
    "max": 1.67
  },
  {
    "name": "Ice",
    "min": 1.309,
    "max": 1.309
  },
  {
    "name": "Idocrase",
    "min": 1.713,
    "max": 1.713
  },
  {
    "name": "Iodine Crystal",
    "min": 3.34,
    "max": 3.34
  },
  {
    "name": "Iolite",
    "min": 1.522,
    "max": 1.578
  },
  {
    "name": "Iron",
    "min": 2.95,
    "max": 2.95
  },
  {
    "name": "Ivory",
    "min": 1.54,
    "max": 1.54
  },
  {
    "name": "Jade, Jadeite",
    "min": 1.64,
    "max": 1.667
  },
  {
    "name": "Jade, Nephrite",
    "min": 1.6,
    "max": 1.641
  },
  {
    "name": "Jadeite",
    "min": 1.665,
    "max": 1.665
  },
  {
    "name": "Jasper",
    "min": 1.54,
    "max": 1.54
  },
  {
    "name": "Jet",
    "min": 1.66,
    "max": 1.66
  },
  {
    "name": "Kornerupine",
    "min": 1.665,
    "max": 1.665
  },
  {
    "name": "Kunzite",
    "min": 1.66,
    "max": 1.676
  },
  {
    "name": "Kyanite",
    "min": 1.715,
    "max": 1.715
  },
  {
    "name": "Labradorite",
    "min": 1.56,
    "max": 1.572
  },
  {
    "name": "Lapis Gem",
    "min": 1.5,
    "max": 1.5
  },
  {
    "name": "Lapis Lazuli",
    "min": 1.5,
    "max": 1.55
  },
  {
    "name": "Lazulite",
    "min": 1.615,
    "max": 1.615
  },
  {
    "name": "Lead",
    "min": 2.01,
    "max": 2.01
  },
  {
    "name": "Lead Nitrate",
    "min": 1.782,
    "max": 1.782
  },
  {
    "name": "Leucite",
    "min": 1.509,
    "max": 1.509
  },
  {
    "name": "Light Flint Glass",
    "min": 1.575,
    "max": 1.575
  },
  {
    "name": "Liquid Carbon Dioxide",
    "min": 1.2,
    "max": 1.2
  },
  {
    "name": "Liquid Water (20deg C)",
    "min": 1.333,
    "max": 1.333
  },
  {
    "name": "Lucite",
    "min": 1.495,
    "max": 1.495
  },
  {
    "name": "Magnesite",
    "min": 1.515,
    "max": 1.515
  },
  {
    "name": "Malachite",
    "min": 1.655,
    "max": 1.655
  },
  {
    "name": "Meerschaum",
    "min": 1.53,
    "max": 1.53
  },
  {
    "name": "Mercury (liquid)",
    "min": 1.62,
    "max": 1.62
  },
  {
    "name": "Methanol",
    "min": 1.329,
    "max": 1.329
  },
  {
    "name": "Milk",
    "min": 1.35,
    "max": 1.35
  },
  {
    "name": "Moissanite",
    "min": 2.65,
    "max": 2.69
  },
  {
    "name": "Moldavite",
    "min": 1.5,
    "max": 1.5
  },
  {
    "name": "Moonstone",
    "min": 1.518,
    "max": 1.526
  },
  {
    "name": "Moonstone, Adularia",
    "min": 1.525,
    "max": 1.525
  },
  {
    "name": "Moonstone, Albite",
    "min": 1.535,
    "max": 1.535
  },
  {
    "name": "Morganite",
    "min": 1.585,
    "max": 1.594
  },
  {
    "name": "Mylar",
    "min": 1.65,
    "max": 1.65
  },
  {
    "name": "Natrolite",
    "min": 1.48,
    "max": 1.48
  },
  {
    "name": "Nephrite",
    "min": 1.6,
    "max": 1.6
  },
  {
    "name": "Nickel",
    "min": 1.08,
    "max": 1.08
  },
  {
    "name": "Nitrogen (gas)",
    "min": 1.0,
    "max": 1.0
  },
  {
    "name": "Nitrogen (liq)",
    "min": 1.205,
    "max": 1.205
  },
  {
    "name": "Nylon",
    "min": 1.53,
    "max": 1.53
  },
  {
    "name": "Obsidian",
    "min": 1.486,
    "max": 1.5
  },
  {
    "name": "Oil of Wintergreen",
    "min": 1.536,
    "max": 1.536
  },
  {
    "name": "Oil, Clove",
    "min": 1.535,
    "max": 1.535
  },
  {
    "name": "Oil, Lemon",
    "min": 1.481,
    "max": 1.481
  },
  {
    "name": "Oil, Neroli",
    "min": 1.482,
    "max": 1.482
  },
  {
    "name": "Oil, Orange",
    "min": 1.473,
    "max": 1.473
  },
  {
    "name": "Oil, Safflower",
    "min": 1.466,
    "max": 1.466
  },
  {
    "name": "Oil, vegetable (50deg C)",
    "min": 1.47,
    "max": 1.47
  },
  {
    "name": "Olivine",
    "min": 1.67,
    "max": 1.67
  },
  {
    "name": "Onyx",
    "min": 1.486,
    "max": 1.486
  },
  {
    "name": "Onyx Marble",
    "min": 1.486,
    "max": 1.486
  },
  {
    "name": "Opal",
    "min": 1.45,
    "max": 1.45
  },
  {
    "name": "Opal, Black",
    "min": 1.44,
    "max": 1.46
  },
  {
    "name": "Opal, Fire",
    "min": 1.43,
    "max": 1.46
  },
  {
    "name": "Opal, White",
    "min": 1.44,
    "max": 1.46
  },
  {
    "name": "Oregon Sunstone",
    "min": 1.56,
    "max": 1.572
  },
  {
    "name": "Oxygen (gas)",
    "min": 1.0,
    "max": 1.0
  },
  {
    "name": "Oxygen (liquid)",
    "min": 1.221,
    "max": 1.221
  },
  {
    "name": "Padparadja",
    "min": 1.76,
    "max": 1.773
  },
  {
    "name": "Painite",
    "min": 1.787,
    "max": 1.787
  },
  {
    "name": "Paraffin Wax",
    "min": 1.442,
    "max": 1.448
  },
  {
    "name": "Pearl",
    "min": 1.53,
    "max": 1.69
  },
  {
    "name": "Periclase",
    "min": 1.74,
    "max": 1.74
  },
  {
    "name": "Peristerite",
    "min": 1.525,
    "max": 1.525
  },
  {
    "name": "PET",
    "min": 1.575,
    "max": 1.575
  },
  {
    "name": "Petalite",
    "min": 1.502,
    "max": 1.502
  },
  {
    "name": "PETg",
    "min": 1.57,
    "max": 1.57
  },
  {
    "name": "Phenakite",
    "min": 1.65,
    "max": 1.65
  },
  {
    "name": "Phosgenite",
    "min": 2.117,
    "max": 2.117
  },
  {
    "name": "Plastic",
    "min": 1.46,
    "max": 1.46
  },
  {
    "name": "Platinum",
    "min": 2.33,
    "max": 2.33
  },
  {
    "name": "Plexiglas",
    "min": 1.5,
    "max": 1.5
  },
  {
    "name": "PMMA",
    "min": 1.489,
    "max": 1.49
  },
  {
    "name": "Polycarbonate",
    "min": 1.584,
    "max": 1.584
  },
  {
    "name": "Polystyrene",
    "min": 1.55,
    "max": 1.55
  },
  {
    "name": "Prase",
    "min": 1.54,
    "max": 1.54
  },
  {
    "name": "Prasiolite",
    "min": 1.54,
    "max": 1.54
  },
  {
    "name": "Prehnite",
    "min": 1.61,
    "max": 1.61
  },
  {
    "name": "Proustite",
    "min": 2.79,
    "max": 2.79
  },
  {
    "name": "Purpurite",
    "min": 1.84,
    "max": 1.84
  },
  {
    "name": "Pyrite",
    "min": 1.81,
    "max": 1.81
  },
  {
    "name": "Pyrope",
    "min": 1.74,
    "max": 1.74
  },
  {
    "name": "Quartz",
    "min": 1.544,
    "max": 1.644
  },
  {
    "name": "Quartz, Fused",
    "min": 1.458,
    "max": 1.458
  },
  {
    "name": "Rhodizite",
    "min": 1.69,
    "max": 1.69
  },
  {
    "name": "Rhodochrisite",
    "min": 1.6,
    "max": 1.6
  },
  {
    "name": "Rhodonite",
    "min": 1.735,
    "max": 1.735
  },
  {
    "name": "Rock salt",
    "min": 1.516,
    "max": 1.544
  },
  {
    "name": "Ruby",
    "min": 1.757,
    "max": 1.779
  },
  {
    "name": "Rubber, Natural",
    "min": 1.519,
    "max": 1.519
  },
  {
    "name": "Rum, White",
    "min": 1.361,
    "max": 1.361
  },
  {
    "name": "Rutile",
    "min": 2.62,
    "max": 2.62
  },
  {
    "name": "Salt (NaCl)",
    "min": 1.544,
    "max": 1.544
  },
  {
    "name": "Sanidine",
    "min": 1.522,
    "max": 1.522
  },
  {
    "name": "Sapphire",
    "min": 1.757,
    "max": 1.779
  },
  {
    "name": "Sapphire, Star",
    "min": 1.76,
    "max": 1.773
  },
  {
    "name": "Scapolite",
    "min": 1.54,
    "max": 1.54
  },
  {
    "name": "Scapolite, Yellow",
    "min": 1.555,
    "max": 1.555
  },
  {
    "name": "Scheelite",
    "min": 1.92,
    "max": 1.92
  },
  {
    "name": "Selenium, Amorphous",
    "min": 2.92,
    "max": 2.92
  },
  {
    "name": "Serpentine",
    "min": 1.56,
    "max": 1.56
  },
  {
    "name": "Shampoo",
    "min": 1.362,
    "max": 1.362
  },
  {
    "name": "Shell",
    "min": 1.53,
    "max": 1.53
  },
  {
    "name": "Shower gel",
    "min": 1.51,
    "max": 1.51
  },
  {
    "name": "Silicon",
    "min": 4.01,
    "max": 4.24
  },
  {
    "name": "Sillimanite",
    "min": 1.658,
    "max": 1.658
  },
  {
    "name": "Silver",
    "min": 0.18,
    "max": 1.35
  },
  {
    "name": "Sinhalite",
    "min": 1.699,
    "max": 1.699
  },
  {
    "name": "Smaragdite",
    "min": 1.608,
    "max": 1.608
  },
  {
    "name": "Smithsonite",
    "min": 1.621,
    "max": 1.621
  },
  {
    "name": "Sodalite",
    "min": 1.483,
    "max": 1.483
  },
  {
    "name": "Sodium Chloride",
    "min": 1.544,
    "max": 1.644
  },
  {
    "name": "Spessarite",
    "min": 1.79,
    "max": 1.81
  },
  {
    "name": "Sphalerite",
    "min": 2.368,
    "max": 2.368
  },
  {
    "name": "Sphene",
    "min": 1.885,
    "max": 1.885
  },
  {
    "name": "Spinel",
    "min": 1.712,
    "max": 1.717
  },
  {
    "name": "Spinel, Blue",
    "min": 1.712,
    "max": 1.747
  },
  {
    "name": "Spinel, Red",
    "min": 1.708,
    "max": 1.735
  },
  {
    "name": "Spodumene",
    "min": 1.65,
    "max": 1.65
  },
  {
    "name": "Star Ruby",
    "min": 1.76,
    "max": 1.773
  },
  {
    "name": "Staurolite",
    "min": 1.739,
    "max": 1.739
  },
  {
    "name": "Steatite",
    "min": 1.539,
    "max": 1.539
  },
  {
    "name": "Steel",
    "min": 2.5,
    "max": 2.5
  },
  {
    "name": "Stichtite",
    "min": 1.52,
    "max": 1.52
  },
  {
    "name": "Strontium Titanate",
    "min": 2.41,
    "max": 2.41
  },
  {
    "name": "Styrene",
    "min": 1.519,
    "max": 1.519
  },
  {
    "name": "Styrofoam",
    "min": 1.595,
    "max": 1.595
  },
  {
    "name": "Sugar Solution 30%",
    "min": 1.38,
    "max": 1.38
  },
  {
    "name": "Sugar Solution 80%",
    "min": 1.49,
    "max": 1.49
  },
  {
    "name": "Sulphur",
    "min": 1.96,
    "max": 1.96
  },
  {
    "name": "Synthetic Spinel",
    "min": 1.73,
    "max": 1.73
  },
  {
    "name": "Taaffeite",
    "min": 1.72,
    "max": 1.72
  },
  {
    "name": "Tantalite",
    "min": 2.24,
    "max": 2.24
  },
  {
    "name": "Tanzanite",
    "min": 1.692,
    "max": 1.7
  },
  {
    "name": "Teflon",
    "min": 1.35,
    "max": 1.38
  },
  {
    "name": "Thomsonite",
    "min": 1.53,
    "max": 1.53
  },
  {
    "name": "Tiger eye",
    "min": 1.544,
    "max": 1.544
  },
  {
    "name": "Tin Iodide",
    "min": 2.106,
    "max": 2.106
  },
  {
    "name": "Titanium",
    "min": 2.16,
    "max": 2.16
  },
  {
    "name": "Topaz",
    "min": 1.607,
    "max": 1.627
  },
  {
    "name": "Topaz, Blue",
    "min": 1.61,
    "max": 1.61
  },
  {
    "name": "Topaz, Imperial",
    "min": 1.605,
    "max": 1.64
  },
  {
    "name": "Topaz, Pink",
    "min": 1.62,
    "max": 1.62
  },
  {
    "name": "Topaz, White",
    "min": 1.63,
    "max": 1.63
  },
  {
    "name": "Topaz, Yellow",
    "min": 1.62,
    "max": 1.62
  },
  {
    "name": "Tourmaline",
    "min": 1.603,
    "max": 1.655
  },
  {
    "name": "Tourmaline, Blue",
    "min": 1.61,
    "max": 1.64
  },
  {
    "name": "Tourmaline, Catseye",
    "min": 1.61,
    "max": 1.64
  },
  {
    "name": "Tourmaline, Green",
    "min": 1.61,
    "max": 1.64
  },
  {
    "name": "Tourmaline, Paraiba",
    "min": 1.61,
    "max": 1.65
  },
  {
    "name": "Tourmaline, Red",
    "min": 1.61,
    "max": 1.64
  },
  {
    "name": "Tremolite",
    "min": 1.6,
    "max": 1.6
  },
  {
    "name": "Tugtupite",
    "min": 1.496,
    "max": 1.496
  },
  {
    "name": "Turpentine",
    "min": 1.472,
    "max": 1.472
  },
  {
    "name": "Turquoise",
    "min": 1.61,
    "max": 1.65
  },
  {
    "name": "Ulexite",
    "min": 1.49,
    "max": 1.49
  },
  {
    "name": "Uvarovite",
    "min": 1.87,
    "max": 1.87
  },
  {
    "name": "Vacuum",
    "min": 1.0,
    "max": 1.0
  },
  {
    "name": "Variscite",
    "min": 1.55,
    "max": 1.55
  },
  {
    "name": "Vivianite",
    "min": 1.58,
    "max": 1.58
  },
  {
    "name": "Vodka",
    "min": 1.363,
    "max": 1.363
  },
  {
    "name": "Wardite",
    "min": 1.59,
    "max": 1.59
  },
  {
    "name": "Water (0 deg C)",
    "min": 1.333,
    "max": 1.333
  },
  {
    "name": "Water (100 deg C)",
    "min": 1.318,
    "max": 1.318
  },
  {
    "name": "Water (20 deg C)",
    "min": 1.333,
    "max": 1.333
  },
  {
    "name": "Water (gas)",
    "min": 1.0,
    "max": 1.0
  },
  {
    "name": "Water (35 deg C)",
    "min": 1.325,
    "max": 1.325
  },
  {
    "name": "Water Ice",
    "min": 1.31,
    "max": 1.31
  },
  {
    "name": "Wax (pariffin)",
    "min": 1.442,
    "max": 1.448
  },
  {
    "name": "Whisky",
    "min": 1.356,
    "max": 1.356
  },
  {
    "name": "Wulfenite",
    "min": 2.3,
    "max": 2.3
  },
  {
    "name": "Zinc Crown Glass",
    "min": 1.517,
    "max": 1.517
  },
  {
    "name": "Zincite",
    "min": 2.01,
    "max": 2.01
  },
  {
    "name": "Zircon",
    "min": 1.777,
    "max": 1.987
  },
  {
    "name": "Zircon, High",
    "min": 1.96,
    "max": 1.96
  },
  {
    "name": "Zircon, Low",
    "min": 1.8,
    "max": 1.8
  },
  {
    "name": "Zirconia, Cubic",
    "min": 2.173,
    "max": 2.21
  }
]