Light up crystal amulet lamp

I designed a small crystal lamp amulet to use as a night light in a fantasy larp setting.
It is small and powered by a tiny led light intended for lighting up balloons. You can turn the light on and off by rotating the pin by which it hangs from the string.

The amulet consists of 4 parts:

the crystal body: Print in translucent filament, 3 walls/perimeters (0,4 nozzle) and NO infill
The pin: print with 5+ walls/perimeters in a non translucent material
Screw cap: print with 3 walls/perimeters and at least 15% infill
the led light: You can find the specific led light used by searching balloon led light (wedding decoration) Check the picture to make sure you buy the right model.

Assembly:
remove the flexible ring from the led light and insert the ring into printed crystal past the thread. Then insert the led light completely (led part first) and see if you can push it in through the ring. The front part of the led light should be somewhat held in place so you can turn it on by rotating the back part by the pin. If you can't insert the lamp (not all rings are the same size) remove the ring again and insert the lamp without it, maybe use a bit of tape on the the front part of the lamp to make sure there is some friction.
Then add the conical pin into the screw cap and screw on the cap. Make sure the pin of the lamp fits into the slot on the printed pin. Screw it completely closed and try turning on and off the led by rotating the pin. If not try increasing friction on the top part of the lamp and/or decreasing it on the back part.
If it works well put some string through the hole in the pin, maybe decorate the crystal some more with some more string and tadaa amulet ready.

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