Black: Cottonee. White: Petilil
To find a shiny stone you can trade a pokemon thats holding the shiny stone or maybe someone in your pokemon game will give you one. If you use a Shiny Stone on Minnico it will evolve into Cinnico
To be honest, if you have a Shelder then the best way to get it to evolve it to use a Water Stone only because you can level it up all you want and it will not evolve. So just use a Water Stone.
i know eevee can use water fire and thunder stones , Roselia can use a shiny stone, victrebell can use a leaf stone, clefairy can use a moon stone, and I think just think cherim can use a sun stone. i know theres more though
One way is to go to charge stone cave and use a max repel and search
Use Surf in Driftveil and surf right. The iitem on the rocks is a Water Stone
You need to use a water stone
you can use a water stone on lombre
Use a Sun Stone on it.
Sunkern and Gloom use a sun stone Lombre, Staryu, and Eevee use water stones.
you can't find it in the wild. you can use a water stone on eevee to evolve it into vaporeon
thunderstone cave
you use it, assuming you have a Pokemon that requires a water stone to evolve instead of just simply leveling.
Equip the Warrior with the Stone and then in a battle or a training session, use it on that Pokemon. And voila.
Lombre and etc
you use it on some water type Pokemon to evolve them. example:pikachu+thunder stone example:polywhirl+water stone example:evee+fire stone example:Roselia+sun Stone example:murkrow+dusk stone a ever stone prevents your Pokemon from evolving
There is only one pokemon you can use it on and that is eevee to get vaporeon