Stone type - Tanzanite

Tanzanite Crystal – Rare Gemstone from Tanzania

The Tanzanite Crystal is one of the most extraordinary gemstones in the world: As a blue to violet variety of the mineral zoisite (chemical formula Ca₂Al₃(SiO₄)₃(OH)), it was only discovered in 1967 at the foot of Kilimanjaro in Tanzania – and has since been considered one of the rarest gem and collector's stones of all. Its fascinating property of shifting between deep sapphire blue, radiant violet, and delicate purple-blue depending on the angle of light (pleochroism) makes every stone a unique natural original.

At Crystal Paradise, we hand-select our tanzanite pieces with years of trading expertise and the experience from our showroom in Feldkirchen near Munich – ensuring that only specimens of convincing quality and authenticity make it into our assortment.

What can you find in our Tanzanite collection?

Our Tanzanite collection includes hand-selected individual pieces for collectors, decoration enthusiasts, and spiritually interested people alike. Whether raw or polished – every stone is an authentic natural product with a distinctive character.

• Raw tanzanite crystals – natural specimens and individual crystals with original charm
• Polished tanzanite pieces – freeforms, cabochons, and tumbled stones with rich color play
• Tanzanite as a gemstone – elegant pendants and settings for everyday wear
• Tanzanite decoration objects – stylish eye-catchers for living spaces and meditation areas
• Tanzanite as a gift – exclusive individual pieces in various price ranges, ideal for special occasions

Mineralogical characteristics at a glance

• Mineral group: Zoisite (epidote group)
• Chemical formula: Ca₂Al₃(SiO₄)₃(OH)
• Color: Intense blue to violet-purple, strongly pleochroic
• Mohs hardness: 6.0–7.0
• Streak color: White
• Luster: Vitreous luster
• Origin: Exclusively Merelani Hills, Tanzania (only known deposit worldwide)
• Crystal system: Orthorhombic

Origin and Quality: Why Tanzanite Is So Special

Tanzanite is mined at only a single location worldwide: the Merelani Hills near Arusha in northern Tanzania, in a mining area of just about 20 square kilometers. This geological uniqueness makes it one of the most sought-after gemstones in the world – experts estimate that the known deposits could be exhausted within a few decades. Learn more about the geology and history of the stone in our blog article Tanzanite from Tanzania – A Fascinating Gemstone with Special Energy.

The quality of a tanzanite crystal is determined primarily by color saturation, clarity, and weight (carat). Particularly high-quality pieces show a rich, clear blue-violet without visible inclusions. Most tanzanites available on the market have been thermally treated to intensify their color play – at Crystal Paradise, we transparently indicate the treatment status so you know exactly what you are getting. Anyone wanting to discover other rare gemstones will find an equally exclusive alternative with the green uvarovite garnet.

In stone healing lore, tanzanite is traditionally considered a stone of transformation and inner clarity – it is traditionally said to expand consciousness and deepen the connection to one's own intuition. Learn more about the spiritual dimension of healing stones in our guide Healing Stones and Spirituality: What Stone Lore Tells Us About Different Crystals. Anyone wanting to use crystals as a stylish home accessory will find inspiring ideas in our article Buying Crystal Decor: Elegance for Your Home.

Caring for and Combining Tanzanite

With a Mohs hardness of 6.0–7.0, tanzanite is more robust than many softer minerals, but it should still be protected from strong impacts, chemical cleaning agents, and extreme temperature fluctuations. For cleaning, lukewarm water with a soft cloth is recommended; ultrasonic cleaners should be avoided. Tanzanite pairs decoratively wonderfully with clear stones such as clear quartz, whose radiant transparency beautifully highlights the deep blue of the tanzanite. Other exclusive collector's stones such as the Stibnite crystal impressively complement a high-quality mineral collection.

More information on the mineral species zoisite can also be found in the scientific overview on Wikipedia – Tanzanite.

Frequently Asked Questions

How can I recognize a genuine Tanzanite Crystal?

A genuine tanzanite crystal shows pronounced pleochroism – it shifts between blue, violet, and, in its raw state, often brown, depending on the viewing angle. Fake or mistaken stones (e.g., blue-colored glass or synthetic stones) do not show this three-dimensional color play. At Crystal Paradise, you receive only verified natural stones with transparent origin information – if in doubt, our team will personally advise you at our showroom in Feldkirchen.

Who is Tanzanite suitable for as a gift?

Tanzanite makes an exclusive gift for anyone who appreciates something special: for mineral collectors wanting to add a rare stone to their collection, for jewelry lovers wishing to wear an extraordinary gemstone, or for spiritually interested people to whom, according to spiritual tradition, tanzanite is attributed special significance. As a birthday, anniversary, or Christmas gift, a hand-selected tanzanite piece is guaranteed to leave a lasting impression.