Geology / History

Tanzanite is the blue/purple variety of the mineral Zoisite (a calcium aluminium hydroxyl Sorosilicate) belonging to the epidote group. Discovered in the Mererani Hills of Manyara Region in Northern Tanzania in 1967 near the city of Arusha and Mount Kilimanjaro. Tanzanite is a highly prized gemstone. Naturally formed tanzanite is extremely rare & still found only in the Mererani Hills.

Tanzanite is noted for its remarkably strong trichroism, appearing alternately sapphire blue, violet & burgundy depending on crystal orientation. Tanzanite can also appear differently when viewed under alternate lighting conditions. The blues appear more evident when subjected to fluorescent light & the violet hues can be seen readily when viewed under incandescent light.

The mineral was named by Tiffany & Co. after the country in which it was discovered. In 2002, the American Gem Trade Association chose Tanzanite as a December birthstone, the first change to their birthstone list since 1912.

Metaphysical Properties

A stone of transformation which vibrates to extremely high frequency linking you to the Angelic realms, spirit guides & ancient ascended Masters. Facilitates connection to the Akashic record. Enhances deep meditation. Provides perspective & the ability to be your true self. Removes judgment of self & others.  Heals & dissolves old Karma. Excellent manifestation tool.

Crystal Healing

Works on head, skin, hair, throat & chest, dissolves “di-sease”. 

Mineralogy

Group: Epidote - Zoisites - Sorosilicates

Crystal System: Orthorhombic

Composition: (Ca2Al3(SiO4)(Si2O7)O(OH)) + (Cr,Sr)

Form/Habit: Prismatic crystals with striations; massive to columnar

Hardness: 6.5

Cleavage: Perfect {010}, imperfect {100}

Fracture: Uneven to Conchoidal

Lustre: Vitreous, pearly on cleavage surface

Streak: White to colourless

Specific Gravity: 3.10 – 3.38

Transparency: Transparent to translucent

R.I: 1.69–1.70

Colour: Purple to Blue

Birefringence: 0.006–0.018

Pleochroism: Present, dichroism or trichroism depending on colour