Shading artifact on planet rings?

Im following the minimalism planets tutorial and Ive run into this issue, as you can see between the green lines there is a strange line that looks kind of like z-fighting or something, but I cannot for the life of me figure out where its coming from.

Ive tried a few things; 

Its there regardless of scaling, both on eevee and cycles. Altering the bezier curve that makes up the ring profile didnt fix it. It shows up in both bezier circle and nurbs circle. I did notice it moves along the circle as I change the camera angle or tilt the circle. Notably its still visible even when I render the image, just less so than in shaded view.

Applying scale etc. playing around with shader settings, enabling and disabling shadows and other visual effects both in render and object settings.

The only thing I can see that affects it is if I leave the noise texture and voronoi texture nodes but disconnect the texture coordinate and mapping nodes, then it vanishes. Changing x-scaling on the mapping node to be non-zero also doesnt fix it. Plugging object instead of UV from texture coordinate into mapping node doesnt fix it.

Im at a bit of a loss here, I just cant seem to find where this issue is coming from. Any help would be appreciated.

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  • Martin Bergwerf replied

    Hi Bartosz sstori11 ,

    This is one of those situations, where it would probably be easiest, if you could upload your .blend file (Dropbox, GoogleDrive, or so) and post a Link here.

    It's most likely something small and easily fixable, but hard to guess what exactly is causing it, without seeing the file.

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  • Omar Domenech replied

    Could it be a zoom issue? Sometimes it is as simple as a moiré pattern effect, which happens when you're not viewing your image at 100% of the zoom. 

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