Weird Reddish Marks In Render

[Robb63]

I'm finally getting close on my sunglasses project. My client loves the tortoise shell material I've developed, but I'm getting these odd red marks in the material.

It's located on the two vertical surfaces that sweep down the temple arms of the glasses, and doesn't extend onto the neighboring surfaces. I've checked the surfaces, and they are valid surfaces. I've even meshed the entire thing and it still does it in these exact spots?

Any ideas???

[thomasteger]

No idea - but the material looks great. Did you try the material on a different object?

[Robb63]

It was doing the same exact thing on every glasses frame I applied it to.

Then I broke down and read the manual about the Dielectric material (which this is). After I couple of minutes tweaking the abbe number, and color density, all was right with the world!   

[thomasteger]

Ahhh - good to know!