//  Crystal texture
//  Last edited on 2003-10-26 15:42:46 by stolfi
//  
//  Assumes defined
//
//    gem_color
//    highlight_color
//
//  Defines
//  
//    {texture,interior}_gem

#declare texture_gem = 
    texture{
      pigment {color gem_color filter 1.00}
      finish {diffuse 0.0 ambient 0.0}
    }
    texture{
      pigment {color rgb highlight_color filter 0.80}
      finish {diffuse 0.0 ambient 0.0 specular 1.0 roughness 0.02}
    }

#declare interior_gem = interior{ ior 1.5 }