Playing with shaders- How do I make crystals transparent?

I tried the transparency tutorial, but it just outright didn't work. I assume the shader is not compatible with it.

So I set the shader to "plumbob" thinking that might at least make it a shiny glass material, buuuut all that does is make them brighter and spin in place, which is honestly a really neat effect, but not what I'm going for.

www.reddit.com/r/Sims4/comments/auth0l/i_tried_to_make_crystals_look_shinier_or/