One of the most commonly used tools for divination and dowsing is a pendulum. A pendulum is a symmetrical object that is hung from a single chain or cord. It is more often than not a crystal - simple to use. It's a tool that lets the user tune in to their intuitive powers. Acting as a receiver and transmitter of information, the pendulum moves in different directions directly in response to questions.
A pendulum works by tapping into your intuition and sixth sense. It receives and transmits information by communicating with your higher guidance, guardian angels and spiritual teachers. As the pendulum moves, you gain answers in response to questions. Its use is best suited for answering  yes? or  no? questions.

Some people describe the way a pendulum works as being like bringing together the rational and intuitive sides of you (the left and right sides of your brain).
When these two elements are brought together, you?re able to make decisions using all the sources, rather than just one of them.
Many people choose to use a crystal pendulum. Clear quartz, for example, is a popular choice, as the crystal is associated with clarity. Another choice is Amethyst, which has a strong connection with the spirits and is very popular since it has the calming properties of a rose quartz crystal. But really, the material is secondary and what primarily matters is that it should be rounded or tapering towards one end.