I was asked if I could make this: https://www.thingiverse.com/thing:1729963 as part of a gift but I wasn't sure where to get the LED module they used so I decided to remix the original model to fit some RGB LED Tealights I bought from Amazon a couple of years ago. They're no longer available at this time, but there appear to be some similar ones available

LED Tea Lights for reference: https://www.amazon.com/gp/product/B00O1FUJ6U

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I hollowed out the crystal, separated it from the base and discarded the base. I then made a new base to fit the tea light based on my measurements and added a gap to make it easy to turn on and off.

The crystal piece and tealight can be glued into the base if you choose to do so (I did).

I have included the Fusion 360 Archive and the STEP file

Print instructions

I printed the crystal with 3 perimeters, auto generated supports from the buildplate only and the overhang threshold was set to 45°

Crystal Temps: 220°C/65° First Layer, 215°/60°Other Layers

The base was printed with no supports, bridging angle set to 180°, 4 perimeters and 20% infill to give it a little weight.

Base Temps: 220°C/65° First Layer, 215°/60°Other Layers

Both parts should be printable as oriented.