"prismic" isn't a word?

Pragmatic. Or “ooh, pretty colors!”.
What?

The Grand Prismatic Spring in Yellowstone.

You really shouldn’t give the OP such a hard time. . . .

Does that mean there’s no jismic?

Nah, it’s jismatic, baby!

I don’t know why, but in my head that phrase had an Austen Powers accent.