The stones don't give you the knowledge of the motif, they are merely a stone which can substitute for any style stone in the game.
If you know the style but lack the style material yes they'll work, if you don't know the style then no they won't help.
@Turelus - EU PC Megaserver "Don't count on others for help. In the end each of us is in this alone. The survivors are those who know how to look out for themselves."