Blue Quartz is a calming stone which also protects from negativity.  It has all the general properties of Quartz but also additional properties associated with its colour.  Blue Quartz alleviates fear and enhances creativity and expression.  It has the effect of balancing the throat chakra, it can assist in communication and allow its owner to reach out to others.
It is an uplifting stone which can aid to lift depression and restore hope, happiness and peace.  It can assist spiritual communication, particularly with angels and spirit guides.   Blue Quartz is helpful for organs in the upper body.  It heals the throat, aids the parathyroid glands and cleanses the blood.  It also fortifies the immune system.
Physically Quartz can particularly help to stimulate the thyroid and the thymus. It can help with digestive problems and also alleviate nausea.  It can also benefit the immune system.  It cleanses and enhances all the organs and strengthens all systems of the body.  Quartz is said to be particularly helpful for chronic fatigue, arthritis, fibromyalgia, depression, bone injuries and intestinal problems.
Mentally and Emotionally  Quartz can provide clarity of thought and aids concentration.  It can also help to retain information which makes it especially useful for aiding study.  Quartz can help to boost clear thinking and can therefore aid the owner to recall forgotten memories.  Quartz is excellent for emotional healing and is good for alleviating anger.
Spirituality Quartz is an excellent stone for psychic healing.  It can assist in balancing all chakras, aligning subtle bodies and is great for assisting meditation and spiritual communication.  It is also a great stone for protecting the aura and enhancing psychic abilities.  It absorbs all negative energy of all kinds including radiation and electromagnetic smog.
Chakra: Throat