Hello! (: I made a cat’s eye effect in shader nodes. This phenomenon occurs due to tiny parallel inclusions of mineral within the gemstone.

I recreated this effect with anisotropy and by manipulating tangent
some variations


and a quick render:
Hello! (: I made a cat’s eye effect in shader nodes. This phenomenon occurs due to tiny parallel inclusions of mineral within the gemstone.

I recreated this effect with anisotropy and by manipulating tangent
some variations


and a quick render:
I featured you on BlenderNation, have a great weekend!