Tanzanite - small raw

Tanzanite is the blue and violet variety of the mineral zoisite (a calcium aluminium hydroxyl sorosilicate), caused by small amounts of vanadium. Tanzanite belongs to the epidote mineral group. Tanzanite is only found in Tanzania, in a very small mining area (approximately 7 km (4.3 mi) long and 2 km (1.2 mi) wide) near the Mererani [sw] Hills. - Wikipedia

One of the most valuable crystals for spiritual work and growth, Tanzanite brings together all aspects of communication and psychic power. A stone for connecting to higher powers and beings.

Tanzanite is an excellent crystal for novices to the exploration of psychic powers, as it is very protective and allows the clairvoyant Brow Chakra to open gradually, preventing psychic impressions from becoming overwhelming. To open the Third Eye and psychic powers, circle a Tanzanite clockwise in the center of the brow, and counterclockwise to close it. [Eason, 221]

As a workplace stone, Tanzanite is calming and soothing. Even a tiny piece is beneficial for overcoming communication difficulties. It is also practical in providing a solution to problems when there seems to be none. It is a good stone for career change. [Eason, 221]

Tanzanite is said to strengthen the immune system, detoxify the blood and improve vitality. It promotes the regeneration of cells, skin and hair, and protects against the side-effects of medical intervention. 

Often used in treating psychological disorders, stress, and nervous tension, and is excellent for the problem of excessive sweating. It may relieve migraine headaches, and in conjunction with other treatments such as counseling.