-Next, hold the rock with both of your hands.
-Once you're doing this, imagine all the negative energy washing out.
-While still doing this, chant,
"I cleanse this rock. Blessed be."
-After chanting, close your eyes and visualize a veil of white energy phasing through your hands and entering the rock. You, then, should feel a soft vibration.
-Your rock is now cleansed and ready for spell casting.
*If you're new and don't know how to cleanse, cleansing is the action of ridding negative energy from any tool or item.