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January 5
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:iconschmiegel:
Attempting to fake double refraction (cross eye view):

1 Row: Double refraction via overlay
2 Row: High Ior
3 Row: Low Ior

The gem shape is based on Cut Diamond by Thingyverse user M_G.

Blender work - rendered in Yafaray (simple settings to get the 4 base images sooner)
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:iconthefailmaster:
~thefailmaster Jan 13, 2013  Hobbyist Writer
holy crap, you made this in blender?

I could swear that's real!
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:iconschmiegel:
Thank you, sometimes the realism (other people) achieved with CGI images scares me ... :)
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:icontimemit:
*timemit Jan 12, 2013  Student General Artist
I like the 4th best overall but I always find that the refraction intensity on exit comes out a little too strong (top right and bottom left are the most realistic on the green gem)
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:iconschmiegel:
Thank you! Actual IOR for a tourmaline would be about 1.6 - I admit I increased it a bit to have a stronger effect ;)
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:iconlaxmijayaraj:
Wonderful!!! :clap:
For me the 1st one looks perfect!!!
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:iconschmiegel:
Thank you! Much appreciated!
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:iconolotocolo:
~Olotocolo Jan 5, 2013  Student Digital Artist
I would say the third one is the best in cross-eye...
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:iconschmiegel:
Yep, having the smallest refraction value it's the easiest to view.
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