I designed this ring for me. I did it with blender and formed the eye itself with the sculpting-tool.
I printed the ring with my resin-printer, made ...a silon mold and injected wax. I then used a lost wax casting to make the final ring.
As this was my first casting of that kind that was (almost) successful, I had to do a lot of filing, sanding and polishing. In the photo you see a second ring in the state as it came out of the plaster.