When you select a crystal for psychic readings, you will feel a vibration while looking at or touching a chosen stone. The best crystal will attract your attention somehow. Maybe you will immediately like the deep dark color of a black tourmaline or the smooth surface of jasper.  In addition, you can select a crystal according to your needs. Since some crystals suit for protection from dark powers and others may be effective for love affairs, you need to consider their features that will fit your requirements.