Spiritual and Healing Properties of Tanzanite:
Calming Stone
Tanzanite is a calming stone. It is good if life becomes chaotic or extremely busy and one is starting to feel out of balance from that. it will bring you back into balance.~forum post from whitehorse woman
Manifesting Stone
The tanzanite will help to manifest desires through will and vision. It gives personal insight and power. A good stone of protection. It helps to connect the 5th, 6th and 7th chakras because of the color that tanzanite ranges in from blue-purple-clear colors. It helps with physic abilities and if a person is just beginning to develop this field, it's one of the most powerful stones for this.It does best set in gold as it brings with it the Sun's energies as well. It will be balanced with the moon's energy, (the stone) and the sun's energy (the gold). Works well in moon or water cleansing.
~forum post from stones

