Many practitioners and therapists are achieving good results by using crystals in their treatments. They ask the client to hold a crystal which in turn helps the body to relax and absorb any negative energy that it may be holding on to.
When the crystals have been used on a person then the practitioner or therapist will require to neutralise the energy before using them again as the crystals will need to be free from negative emissions. There are many ways to do this, the easy one is running them under cold water to earth them or if you prefer you can hold them in your hand and replace the energy with your energy. Hold the stone in your hand visualise the hand filling with light and watch the crystal absorbing the light and releasing negativity.
This is a good method to use if you want to programme a favourite crystal for a specific purpose such as healing. Wrap the stones in a natural material such as cotton and bury them in the garden for a few days, as it will balance the energies from the land. The crystal or crystal that you have can be programmed to work for different healing purposes, just choose the one that attracts you and continually work with it.