What exactly is a 'moss stone'? It's not an evolutionary stone, and the closest item I can think of is the moss rock in Eterna Forest, which isn't in this game...
eterna forest top left corner
Level it up while you are in Pinwheel Forest, there is a moss-covered rock here similar to the one in Pokemon Diamond/Pearl/Platinum.
train in the eterna woods with an egg hatch it next to the moss stone then it will hatch as a gligar
if you levels up eevee near it, it evolves into leafion
you can get one from a man in moss deep space center in Pokemon emerald.
the moss rock is in Eterna forest
no
Twins Liza and Tate in Moss deep City, they use physicic Pokemon
you can't get leafeon in Pokemon emerald. it was first introduced in the 4th gen, and emerald is a 3rd gen game. To get it in pearl, platinum, or diamond, get an eevee, go to eterna forest, and level it up near a moss covered rock. hope this helps
Possibly in the forest
you have to have a latias and a latios both at level 77 holding a sitrus berry then go to moss deep at the space station one of the people will say do you want to go to space?then say yes
you cant catch him and you cant find him, you can look all day. The only way to obtain him is to beat Steve at the end of the game and then go to his house at moss somthing city and there will be one in a pokeball on the table with a letter
you go to the cave behind moss deep in there u can catch a seal or sealo lv 30 or something. then u have to evolve it into walrein at 45.
You need to train an Eevee at Moss Rock in Eterna Forest.
take the eevee into the entra forest, find the moss covered rock and make it grow a level it depends on what game you are talking about, say its on Pokemon emerald. you go into your bag and use a leaf stone. or it could be on pokefarm. you use it but i havent figured out how yet. >.<
there are many, Kelly, emerald, grass, moss just to name a few.