Crystallography Tropy

You can add your own crystal model, it's glued on. The included crystal file is only an example, of course using the winner's crystal (or some real-life mineral) is a much nicer touch. The crystal model needs a 6 mm hole (probably 6.4 mm fits a bit better). I'm providing a blank and a scad file for the plaque(s), so you can customize the text in Prusaslicer or Openscad. Mine has a short description and picture of the winner's crystal structure on the back plaque.

I included the .3mf for this project (4xPLA, Prusa XL 0.2mm QUALITY, no wipe tower). Colors, supports and seams are already painted on and this produced the print in the foto.
Colors used in the project file:
1 - Glitter dark grey
2 - Silver
3 - Gold
4 - Transparent (for infill and supports, light blue in screenshot)

Of course 2 or 3 colors is enough, or even single tool with manual color changes.