Strange discoloration (newbie)

I am trying to model a simple ring made of gold. I am getting this strange discoloration as indicated by the black arrow. Can anyone help out?

If you’re talking about the brighter yellow along the inside edge, then I’d say it’s probably the lighting or the angle that the lamp is to the ring. I’d try moving the lamps around and rendering a couple of times to see if anything changes. Otherwise, I dunno.