#declare F_Glass4 =
finish {
    ambient 0.1
    diffuse 0.1
    reflection .25
    specular 1
    roughness 0.001
}

// Ruby glass
#declare T_Ruby_Glass =
texture {
    finish { F_Glass4 }
    pigment { color rgbf <0.9, 0.1, 0.2, 0.8> }
}