Brave Stone

It evolves some pokemon that have carapace, shell, hull and something of the type. It is called brave because the pokemon that evolves by her usually transform themselves into warriors totally losing the carapace.

Belt Stone
Evolve pokemon fighters or puts the fighter type as second type. Only works with pokemon that have waist.

Time Stone
It accelerates the evolution time and only works with pokemon that was believed that they could never evolve.

Wonder Stone
No one knows why, but, this stone evolves the pokemon improving its aesthetics. Curiously, it acts only on pokemon considered ugly.