is a stone of protection. said to be worn to guard against psychic attacks, quickly releases stress, & bringing deep peace. it brings harmony & deep inner self-knowledge.  it encourages self-awareness, allows self-expression & reveals inner truth, providing qualities of honesty, compassion and morality to the personality.  associated with the throat chakra. a third eye stone. it stimulates objectivity, clarity & encourages creativity. assists to confront & speak one’s truth and inspires confidence.  it bonds relationships, aiding in expression of feelings & emotions. one of the most sought after stones in use since man's history began. its deep, celestial blue remains the symbol of royalty & honor, gods & power, spirit & vision. it is a universal symbol of wisdom & truth. an excellent stone for executives, journalists, & psychologists, stimulating wisdom & good judgment in the practical world. it aids intellectual analysis in archeologists & historians, problem solving for lawyers, & creates new ideas for inventors & writers. powerful crystal for activating the higher mind & enhancing intellectual ability. it stimulates the desire for knowledge, truth & understanding, & aids the process of learning. it is excellent for enhancing memory. a stone of truth, encourages honesty of the spirit, & in the spoken & written word. wear it for all forms of deep communication. it is also a stone of friendship & brings harmony in relationships. brings calm & loving communication for a home with temperamental teenagers, or children with asperger's syndrome, autism, or attention-deficit disorder. boosts the immune system, purifies blood, lowers blood pressure, cooling & soothing areas of inflammation. it alleviates insomnia & vertigo, & overcomes depression. benefits the respiratory & nervous systems & the throat, vocal chords, & thyroid, cleanses organs, bone marrow & thymus.