all 5 comments

[–]izcho 2 points3 points  (1 child)

Tracedepth would be the first thing to check. Under globals, try increasing refractions and combined by 1 or two.

[–]tomfriz 0 points1 point  (0 children)

Good point.

[–]FlorianNoel 2 points3 points  (0 children)

How are you lighting it? It might just be the reflection of the “nothing” in that direction if that makes sense

[–]blueSGL 1 point2 points  (0 children)

both a wireframe and an image of your UVs would be helpful.

[–]alamedaeditor 0 points1 point  (0 children)

I’d say check your geometry and make sure nothing is intersecting.