There is no mind stone. That thing in Vision's head is not the mind stone.
vision's mind: original post Feb 20 2021
vision isn't the real vision. like in the comics he may have got another body as well ...
this was telegraphed by the vision / Darcy convo in the van.
plus the closing titles actually go into vision's body meaning vision's composition is central to what is going on.
vision is a new toaster in the advert.
also mr. hart (with spooky mrs. hart) gave vision a "promotion" ... then he had the kid.
revealingly:
if you look at the closing titles the first part differs sometimes (or looks that way to me) per episode.
look at the start of the closing titles for ep 3. slowly... and you see vision smiling in a weirdly evil way.
from this i guess that the thing that gave fake-vision the ability to have children was an evil contribution of some "living thing" to make him function again.
the mind gem, which is still destroyed, gave vision the "living thing" of "a living mind" in AoU. in WV some other evil source did it instead.
this is why vision cannot leave the hex. his source of "being" is in another dimension only reachable (at present) through the hex and vision (the original) is still dead.
image of the evil smile:
that's edited. no mouth curls like that naturally.
and immediately before that wanda's eyes looked scared and there was a tear forming in her left eye (special effect!) as if she were about to cry
check it out yourself.
ep. 3 opening song:
"We Got Something Cooking" is the theme song of the WandaVision episode Now in Color, and is featured briefly in the episode We Interrupt This Program.
Lyrics
aBa-ba-ba, ba-ba-ba
WandaVision
Ba-ba-ba, ba-ba-ba
WandaVision
We got something cooking
And it's looking good
We've got something cooking
And who knew we could
All great expectations (Ba-ah, ba ba ba)
Lead to complications (WandaVision)
But it's groovy and fun
It's me and it's you
Together, one plus one
Is more than two
Ba-ba-ba, ba-ba-ba
WandaVision
Ba-ba-ba, ba-ba-ba
WandaVision
Some sudden surprises (Ba-ah)
Come in all shapes and sizes (Ba-ah, WandaVision)
But it's rainbows and sun
It's you and it's me
Together, one plus one is family
WandaVision
Doesn't mean Wanda doesn't have some residual Mind Stone energy mixed in with all the other power she's channeling because: Yellow is the color of The Mind Stone.