I dont have Emerald but I think Lombre does.
you can use a water stone on lombre
Lombre and etc
nope.!
Dawn stones aren't available in Pokemon Emerald. Use Mystery Gift.
Use a leaf stone on it
solve your question by going to http://www.pokemondb.co.uk/evolution
You have to use a Sun Stone on Gloom.
Get a Gloom and use a Sun Stone on it.
get eevee and use a fire stone
use a thunder stone on pikachu.
Use a Fire Stone!
It will evolve when you use a moon stone on it.