The Black Stone is located in Makkah, engraved within the Kaabah.
The city is Mecca.
The Black Stone is on display at Nacrene City's museum.
Castelia City, Desert Resort, Black City, or dust clouds
when you answer 'Panpour' to the man in Castelia City Driftveil City in dustclouds in caves you can buy it in Black City (Black Version)
I believe you can buy one in Black City.
You get the fire stone on the first dock of castelia city.
nimbassa city
on a deck in the main city
the bays at castelia city
At striaton city
You can buy them for P10,000 at Black City if you have enough people there.
I do ot know