User blog comment:Inept Wiki User/Speculation: The other Celestial Spirits/@comment-7418318-20130612135149/@comment-7418318-20130612143022

Or the ring might just reflect the light coming from his fist.

Anyway I was more refering to the wind-based ring attack we saw him use in the attack on the phantom lord building in episode 22 (even though it was only shown in the anime).