Used for centuries as a form of divination. Made from metal or stone, the diviner would hold the pendulum out and ask it to show a yes direction in the swing and a no direction. A pendulum is an extension of your own intuition and makes for a wonderful tool.
A round cage holds 7 stones representing the 7 main chakras of your body. A quartz pyramid attached to the bottom and a quartz bead attached to the end of the chain.