In terms of healing, crystal pendulums can be used for unblocking chakras energies. As the pendulum acts as an amplifier for the energy to flow fluidly throughout the body, it provides good information in determining your chakra for your decision-making process.
 
Pendulums are used for dowsing and divination – mystical practices in which one asks the universe for divine guidance through the movement of the pendulum.
Pendulums tap into the energetic connection between you, the Earth, and the Cosmos.
 
Selenite
Considered an angel stone, it can be used for communicationg and contacting angels for guidance and is also great to enhance your mental capacity and bring clarity to any decision making process. 
Selenite can also be used to cleanse and charge your other crystals or to help you find in the body where are the areas that needs your atention to heal or to enhance more life force energy.