you can get it by going to route 119 at the tall grass
You need to buy it from Kecleon stalls in dungeons.
You don't buy stones in Sapphire. You find them, or on an island near Mosdeep, you can trade shards for them. Ex: Red shard for firestones, blue shard for water stones.
evee can evolve into any of its forms in leaf green.all you have to do is to buy the evulation stone you want and use it on evee
there isn't a awakening stone but if a Pokemon is asleep use awakening buy that from pokemarts.
you can buy them in celadon
Go to black city and gain people from pokemon white's white forest who gives you the option of selling leaf stone. After, save, go to the market that just appeared in your city and buy (expensive) leaf stones.
You need to buy it from Kecleon stalls in dungeons.
Go to liyovile city and then go to the general store and buy it
Go to the Celadon City department store and buy one.
The fastest way is to earn points on the Pokemon-a-thon and buy a Leaf Stone there for 2500 points. The Leaf Stone is available at Thursdays I think. You can also get a leaf stone from Bill's Grandpa if you show him an oddish, he is just above Cerulean city. and you can find a leaf stone in viridian forest.
You can buy them on the fourth floor of the Celadon Department Store
You cannot buy leaf stones you have to earn them from people like lennora the second gym leader or find them in poke balls.
There is no place to buy elixirs in Pokemon Sapphire. You can find them using the item finder.
You can't buy leaf stones in emerald to obtain a leaf stone find a green shard and trade it to the hunter found on the route west of mossdeep city he will trade you a leaf stone for the shard.
If by duy you mean buy then the answer is you can't. The only Pokemon games where you can buy evolutionary stones are Pokemon Green, Blue and Yellow (that's right, the originals).
You don't buy stones in Sapphire. You find them, or on an island near Mosdeep, you can trade shards for them. Ex: Red shard for firestones, blue shard for water stones.
Buy it in Mystifying Forest in the Kecleon Markets for 1000 Poke Dollars