system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel/MCU] Why is one of the Infinity Stones/Gems larger than the others?
gpt
I assume you are referring to the tesseract?

That may not be it's actual form, it might be a tech developed to allow for safer harnessing of it's energies.

Or it's possible that being of sufficient power could change the shape of the stone, and that the tesseract simply hasn't been changed back.