You need to find two stones, one representing the female (either a shape with a hole in it or a triangular shape works), and one representing the male. Hold these two stones together in your hand so that they are touching while chanting the following:
Stones of power, stones of might,
Love each other day and night.
Guard each other in the rain,
Until the sun will shine again.
Stones of power, stones of might,
Bring me love if it be right.
Repeat the chant as many times as you like and when you are done place the two stones inside a box to be put away where it will not be disturbed. It is important to make sure that the stones are still touching when they are inside the box.