#macro a(c)light_source{c rgb 1fade_distance 3fade_power 2}#end
a(<3,4,12>)a(y+9*z)a(<-4,5,13>)a(<-1,-2,6>)plane{y-z,-6normal{agate.7scale.3}finish{phong.4}pigment{crackle color_map{[0rgb<.9,.8>][.2rgb<.8,.5>][.6rgb.5][1rgb 1]}}}fog{distance 25rgb.5}