I was wandering through the aisles at Lowes (looking for things to laser). I found these glass tiles. But I am happy with the results. I just need to tweak the image better.
I wished I had seen this before I started.
Maybe exaggerating the contrast might get more of the details from the back to show through or maybe a second pass. Hard to tell until you flip it over.
I think the shadow in refractions can be minimized by painting the edge or adding a frame.