How do you get all the moonstones in Pokemon LeafGreen?

Answer 1

You can get one in mt. moon, one in two island after rescuing Lostelle, and one in the rocket hideout (in Celadon City under the casino). I don't know any other ways, but that is how i got a Nidoqueen and Nidoking.

EternalAlercon:

There are five stone in total.

1.Mt. Moon (First floor, upper left corner.)2.Mt. Moon (Yes, there is another one at the end. Between place where you fight one member of Team Rocket and Super Nerd -where you have to chose one of two fossils- There is a rock in bottem right corner)3.Team Rocket Base (Basement)4.Mansion on Cinnibar Island (Go left and up, where is group of rocks. Check rocks. I think third from the bottom contains moon stone, but you must check it yourself ;P)5. Two Island (After you rescue Lostelle from Hypno, and talk to her father, he will give you moon stone)

AND another one from Clefairy, but I think you have 1% chance to get it.

6. From Clefairy (5% chance wild Pokemon will hold it)

Good luck and let's catch them all! ^.~