Grid + crystals + Pendulum + Board #4Wooden Grid 15cm Use this Grid Board to help you decide, with your pendulum, choosing a tumbled crystal. Whether your choosing the crystal for yourself for the day or choosing for a healing client your working with. Test out your intuition. Decide on a crystal and see if your pendulum agrees. You can add extra crystals or change them whenever you like. There are many different ways to use this board. Allow your intuition to guide you!