Cubic Carbon (Diamond) (From Palik I: pp. 671-672)
nm
NK
   137.8        3.272   0.910
   141.7        3.247   0.855
   145.9        3.228   0.806
   150.3        3.232   0.765
   155.0        3.251   0.712
   159.0        3.276   0.659
   163.1        3.306   0.592
   165.3        3.321   0.553
   167.5        3.335   0.515
   169.8        3.376   0.473
   172.2        3.437   0.388
   173.4        3.464   0.307
   174.6        3.444   0.210
   177.1        3.322   0.0935
   179.7        3.220   0.0524
   182.3        3.146   0.0344
   185.1        3.085   0.0220
   187.9        3.031   0.0147
   190.7        2.985   0.0110
   193.7        2.944   0.00987
   206.6        2.826   0.00799
   213.8        2.780   0.00502
   221.4        2.740   0.00
   226.504      2.7151  0.00
   231.288      2.6950  0.00
   232.125      2.6917  0.00
   232.938      2.6881  0.00
   257.3        2.6145  0.00
   274.84       2.5786  0.00
   346.7        2.4954  0.00
   361.1        2.4854  0.00
   404.7        2.4626  0.00
   467.82       2.4408  0.00
   486.14       2.4354  0.00
   508.58       2.4306  0.00
   546.08       2.4235  0.00
   589.0        2.4175  0.00
   643.85       2.4111  0.00
   656.29       2.4104  0.00