UPDATE: I added three more versions to this. Two come with different holes (hole A and hole B) that are meant for printing two pieces (no supports, 15% infill recommended) to be glued back to back.
The other new one comes with thanks to user Romulan who encouraged me to try printing a full crystal. And it works! That version (full) prints best standing on the tip with supports enabled and forced for the first 30 layers for stability. Make sure your slicer does not pack the thing in supports, though. Check the picture to see how little did the trick for me.
After watching (and loving) Frozen II from Disney, I decided to give those ice crystals forming in that one scene a try. They are fairly easy to model (being geometric), and I decided to go with a relief for the markings.
The idea is that you print two, then glue them back to back to form a full crystal.
Coming up: ways to hang them. Also, another idea that I chose to be cryptic about.
Current issues: I have had some warping issues that occurred in some but not all prints (about 50%). I have tried, without success, a brim and turning off the fan after the first layer. I might try with more bottom layers. Also, I was printing with concentric infill, top and bottom layers because that is what I felt like at the time.
Also, the models in the .stl-files need to be rotated to lay on the print bed. I hope that is obvious.
I'd appreciate your feedback!
I printed these with 3 top and bottom layers to make them lighter, but that is probably not necessary - on top of pointless.