No, you do not need a stone to evolve Riolu. To evolve Riolu, you have to make it happy in the daytime. The quickest way to do this, instead of battling with it like crazy, is to first give it a soothe bell. Then feed it poffins, give it those nutri drinks like zinc and carbos to its max. Then level Riolu up a level and he should evolve into Lucario.
-Hope this helps! ;)
The moon stone is used in Pokemon Diamond to evolve certain Pokemon. You can find one by looking in the Underground.
the #75 sinnoh pokedex entery is honchcrow. The evolved form of murkrow you can evolve murkrow with a dusk stone.
You get a leaf stone underground.
In Diamond, you can obtain a Water Stone in the underground in Sunyshore City.
evee
When evolved with a Firestone, Eevee turns into Flareon.
There is no Pokemon found solely in Diamond version that can be evolved with a Sun Stone. Gloom- can be found in Routes 224, 229, and 230. Sunkern- You need the Poke Radar to find this Pokemon in the Northern area of Route 204.
You cannot evolve a Murkrow in Pokemon FireRed. Murkrow can only be evolved in Pokemon Diamond, Pearl, or Platinum versions with a dusk stone.
I think you use a round stone. I found the evolved version of hapinny in the wild;)
The Pokemon you can find in Acuity Lakefront using the Poke Radar on Pokemon Diamond is Snorunt. Snorunt can be evolved into Glalie at level 42 or Froslass if it's a female and you use a Dawn Stone on it.
The only Pokemon that can be evolved with an Oval stone is a Happiny into a Chancey.
thunder stone
The moon stone is used in Pokemon Diamond to evolve certain Pokemon. You can find one by looking in the Underground.
the #75 sinnoh pokedex entery is honchcrow. The evolved form of murkrow you can evolve murkrow with a dusk stone.
moon stone
There is no such thing as a rock stone.
You get a leaf stone underground.