Indices of refraction

for yellow light with a wavelength of 589 nm

Material                            c/v
Air (at STP)                        1.0003
Water                               1.33
Ethyl Alcohol                       1.36
Glass
  Fused quartz                      1.46
  Crown glass                       1.52
  Light flint                       1.58
Lucite or Plexiglass                1.51
Sodium chloride                     1.53
Diamond                             2.42