What is a Pendulum? A pendulum is a weight at the bottom of a string or chain. They can be made from many things such as stone, crystals, wood, glass, metal etc. I have seen people use a sewing needle on a thread, or a ring on a piece of hair. As long as you have something with some weight to it, hanging from something that allows the weight to move freely, it should work. How to choose a Pendulum Not every pendulum will work well for every person. You don’t choose your pendulum so much as it chooses you….