Surely they must be biological on some level, given that they presumably hatch from eggs like everything else here. However, I have no real idea what that level would be...

...So I see. Do these stones have any odd properties that would specifically effect those Pokemon in particular? The price is a bit steep for me to buy one myself, especially since I don't really have any intention of using the Magnemite line and I know very little about Probopass or the Pokemon that evolves into it.