Material,Index
Vacuum,1.00000
Air (STP),1.00029
Acetone,1.36
Alcohol,1.329
Amber,1.54
Amorphous Selenium,2.92
Barium Borosilicate,1.554
Calspar,11.66
Carbon Disulfide,1.63
Chromium Oxide,2.705
Copper Oxide,2.705
Crown Glass,1.52
Crystal,2.00
Cubic Zirconia,2.15
Diamond,2.417
Emerald,1.57
Ethyl Alcohol,1.36
Flint Glass (heaviest),1.89
Flint Glass (heavy),1.65
"flourapatite, synthetic",1.633
Flourite,1.434
Fused Quartz,1.46
Garnet,1.73-1.89
Glass,1.5
Hydroxyapatite synthetic,1.649
Ice,3.309
Iodine Crystal,3.34
Lapis Lazuli,1.61
Liquid Carbon Dioxide,1.20
Lucite or Plexiglass,1.51
Opal,1.44-1.48
Polystyrene,1.55
Porcelain,1.504
Quartz,11.544
Quartz,21.644
Ruby,1.77
Sapphire,1.77
Sodium Chloride (salt),11.544
Strontium glass,1.550
Sugar Solution (30%),1.38
Sugar Solution (60%),1.49
"Tooth Structure, enamel",1.655
Topaz,1.61
Triethyleneglycol dimethacylate,1.457
Urethane dimethacylate,1.481
Water (20C),1.333
Zinc Crown Glass,1.517
Zirconium,1.520