Squared Circled Squared Circled Square

Squared Circled Squared Circled Square

I thought I could get a squared circle by photographing the top of an optical crystal sphere on its stand, but I couldn’t see the stand through the sphere, so I put the stand on top of the sphere and got this weird optical squared circle inception. The stand itself is optical quality, so the combined refractions produced a square in the center that is pure optics.