first of all you dont get a dusk stone in firered secondly you must mean the moon stone
use a leaf stone on execcute
Use a fire stone on vulpix?
You need to use a water stone to evolve it into one.
Just evolve Growlithe with fire stone
In The Mt. Moonyou can find a moon stone in mt.moon it will be like a pokeball
go to your bag, find the stone, press use and click the Pokemon you want to use it on
You should be able to purchase it, like any other main evolution stone, at a certain floor of the Celadon Department Store.
you can find it at island 6 at dotted hole . To open it, use cut .
find a shellder in the water of pallet town then give it a water stone
You can buy them at the Celadon City Dept Store on the 4th Floor.
You can buy fire stones at the celadon city dept store.