How to cleanse your pendulum!
Here are some ways I like to cleanse my pendulum :)
Earth : Simply bury your pendulum in soil, sand or sea salt and just let it sit for a few hours. (You can use a bowl as well if you like.) The negative energies will be absorbed by the earthen element! After you’re finished, simply get rid of the soil/salt or sand.
Fire : Place your pendulum in the sunlight in the morning. Be careful though, don’t leave it under the Sun more than 1-2 hours since some crystals can fade from the sunlight!
Water : This method requires a glass of water that’s been energized by a crystal. ( You can easily charge this with some crystal quartz in the water). Put your pendulum in the water and allow it to sit in there for 4-5 hours.
Air : Light a sandalwood or some sage incense and pass the pendulum through smoke three times. Focus on the energies your pendulum carries and remove all the negative ones by saying a prayer. When the pendulum feels light, the job is done!