I was thinking about the perfection of Pyrite ("Fools Gold") which lead me down the internet rabbit hole of geometry, complex polytopes and other stuff that is mind blowing, a little hard to understand but nevertheless very interesting to look at.
Flower and Seed Spirals Wolfram Demonstrations Project and NUMB3RS Episode 418: When Worlds Collide Wolfram Research Math Notes.
List of regular polytopes
Cool Find: Daniel Burton's lifeline
8 hours ago