Crystal Grids and Gridding
Crystal grids are a unique way of incorporating crystal energy into the environment and into your life for general or specific issues. The combination of multiple crystals can sometimes be more powerful than just one crystal alone.
They are often organized in a geometric pattern for the maximum flow of subtle energy throughout the crystal grid, or matrix. A select stone, normally larger in size than the others (such as a Quartz generator, for example) is chosen to be the centerpiece of the grid. All other crystals are to be connected to this crystal.
Either through a geometric pattern or design, by energetically connecting each stone back to the centerpiece, or simply with your intention. Not all grids have to be geometric, though.
Have fun with it. Be creative, using your imagination and intuition. I find that doing just that is really what makes a crystal grid especially effective.
-Trenton (Crystal Art Therapy)