Customizeable Jewel

My original Jewel design was created in Blender. Ick! (At least, ick for 3d printing.)
https://www.thingiverse.com/thing:222817

I decided to roll out a new one in opscad and make it cutomizeable.

It includes an optional bottom hole, so you can screw this on as a drawer pull or put an LED inside to light it up.