I need to help with my diamond material, I still
can not find the real looking values. (Those does not look well)

#declare M_Dia=    material {
  texture {
    pigment {rgbt 1}
    finish {
      ambient 0
      diffuse 0.05
      specular 0.5
      roughness 0.005
      reflection {
        0.03, 1.0
        fresnel on
      }
      conserve_energy
    }
  }
  interior {
    ior 2.17
    fade_power 1001
    fade_distance 0
   fade_color <10.,0.1,10>
  }
}

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