started out as a pen doodle less than 1 inch wide on my notebook. 
originally pov'd it with a 3x3 grid of these with varying "phases" and 
colors, didn't really like it, so i removed the rop and bottom rows, and 
rendered it at 1200x400 (then cropped off some extra grey plane)

the only interesting parts are:

#declare n1 = normal_map {
#local n = 10;
#local cn = n;
  #while (n > 0)
   [1/cn granite 0.025 scale <1, 0.1, 0.1> rotate (360/cn * n)*z]
   #local n = n - 1;
  #end
}

#declare f1 =
finish {
  specular 1
  roughness 0.001
  phong 0.5
  phong_size 140
  diffuse 0.5
  reflection {
   0.1, 0.8 fresnel on
  }
}

#macro colored_glass_interior (theColor)
  interior {
   ior 1.65
   fade_power 1001
   fade_distance 0.08
   fade_color color theColor
  }
#end

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