How you use a moon stone in white?

Question

I have been playing Pokemon White and just got a moon stone, but I don't know how to use it to evolve a Pokemon.

Answer 1

Only certain Pokemon will evolve with a Moon Stone. For a list of where to find them and what it evolves, look here.

Answer 2

the moon stone can only be used on a Pokemon compatible with it. in order to use the moon stone select it in your bag and click use. once you have chosen this it will tell you if any of the Pokemon in your party can evolve via moon stone. if so chose that Pokemon and watch it evolve.