Spiritual: balances and aligns chakras, excellent talisman and amulet for travelling (both physical and astral)
Physical: has a calming effect on the nervous system, improves memory and coordination, helps to speed up metabolism, boosts immune system, promotes health of kidneys and bladder
Psychological: brings awareness and clarity of mind, helps to focus attention on one thing that is important in achieving the goals instead of spreading yourself thin trying to do many things at once, promotes logical thinking, great stone for lucid and vivid dreams