What stones can assist with protection and setting boundaries?

I like chiastolite it typically has a cross, cross patterns have been used for centuries to ward of vampires (energy suckers) and is a symbol for being at a cross road of life. Good for making choices that work, chiastolite is also the stone of awakening. Combine with carnelian to give it a boost and energize the creation energies and infuse it with the flame of power. Add charoite to transform any dis-cord that may arise as you shift into higher divine light and let things rise to the level of love that you are.