Just playing with some ideas for the minimalism IRTC round, and came up 
with this rather nice looking glass material.

The source for the material is:

#declare PearlescentGlass =
  material {
   texture {
    pigment { rgb 0 transmit 1 }
    finish {
     reflection { .01, .95 fresnel } conserve_energy
     //big fat phong highlight, to give ethereal sheen to the material.
     //make phong fade with angle, using pov's metallic effect on black
     //(because there's no fresnel for phong)
     phong 30 phong_size 20 metallic 1
     specular 50 roughness .0004   //layer a sharp highlight on top.
    }
   }
   interior {
    ior 1.5
    fade_colour <1,.25,.0>
    fade_distance .5
    fade_power 2
   }
  }

Enjoy!

Tek

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