In Dewford at the cave, Not hard to find.
You cannot buy them, however you can get them in granite cave.
try this code 82740BAB 4B17FE38
You can find everstones underground
you can find many everstones when digging for treasure underground
By using expoler kit and go underground and start diging.
no but you can get one in fire red and leaf green.
Yes, you can acquire more than one Everstone in Pokémon Sapphire. Everstones can be found in various locations, including the Fiery Path and the Safari Zone. Additionally, you can obtain more by defeating certain trainers or by using the Itemfinder in specific areas. Collecting multiple Everstones can be useful for breeding, as they prevent Pokémon from evolving.
Pokemon Ruby has Pokemon that Pokemon Sapphire does not and Pokemon Sapphire has Pokemon that Pokemon Ruby does not.
There is no Pokemon mansion in sapphire.
He is not in Pokemon: Sapphire. You will not be able to find him. He is in Pokemon: Diamond, Pokemon: Pearl, and Pokemon: Platinum. You will definitely have trouble finding him in Pokemon: Sapphire.
Evee is not availiable in Pokemon Sapphire.
Any Pokemon in sapphire but you have to migrate