unwanted irradesence

[jbdstudio]

I'm getting unwanted irradesance in colored gemstone mats.
I'm using default clear glass mat without the diffuse layer.
I changed the color of the transparency and refraction
on the refraction layer. The IOR is at around 1.5.
It seems related to IOR but if i lower IOR the stones
lose their realism. Any ideas what the problem might be?
Its only in some stones and its worse in the first image.

Dino

[dalomar_cg]

Re: unwanted irradesence

First of all I am assuming that you are using just GI and not any other lights. If thats the case, then try disabling Reflection and Refraction GI caustics (Its at the top of the Indirect illumination rollout). It looks like a caustics thing, so that may do the trick.

[Travis Serio_cg]

Re: unwanted irradesence

Hey B post your materials and i'll check them out. I havent seen you on Aim?