You have to make Eevee really happy while it's is evolving,there is no certain level that will make Eevee evolve.
you have to find a gligar you can only find them in diamond then make in trust you and it should evolve :) EEVEE
its not a stone you have to train it up near a rock in eterna forest
You go and have evee have 2 hart love then at night go and make it love you full to evolve
Shaymin does not evolve in Pokemon Diamond.
To make Eevee evolve into an Umbreon, you have to level it up with high happiness at night.
When Eevee loves you, level it up in the Morning.
Evolve Eevee during the day
yes it can evolve
You make it hold a fire-stone.
by painting it black i don't know
Yes. You can also find various other stones to evolve Eevee into other evolutions.