Top headlines :

Home birthstones Tanzanite Gemstone | Everything You Need to Know

Tanzanite Gemstone | Everything You Need to Know

limz Published On Sun Jan 26 2020   Modified On Sun Jan 26 2020
Tanzanite Gemstone | Everything You Need to Know

Tanzanite is the birthstone of December, alongside Zircon and Turquoise. The zodiac sign of this gemstone is Sagittarius or Capricorn. Traditionally, these stones are given as gifts on the 24th wedding anniversary.

Tanzanite symbolizes humility, loyalty, faith, compassion, royalty, wisdom, truth, and dignity. These stones are widely known as the stone of transformation that helps the wearer to forget their past and move on.

Let us learn more about December birthstone, Tanzanite.


Tanzanite is a blue and violet variety of mineral zoisite, first known as saualpite. These stones are high vibrating stones that assists the wearer to develop psychic power. It helps to open up and balance the Throat, Third Eye and Crown Chakras. These stones help to enhance communication, govern expression, and it also assures that we are comfortable with truth.

Why Tanzanite is the Birthstone of December?

December-born babies are bold, attentive, loyal, caring, strong, and influential. They are beautiful both inside and out. These kinds of people draw eyes wherever they go. They don't follow others and are adventurous and hardworking. These beautiful traits make Tanzanite fitting to be the birthstone of December.

Origin and History

Blue Tanzanite Gemstone.
Blue Tanzanite Gemstone.
Image Source:

The name "Tanzanite" is originated from "Tanzania", the only place where these beautiful stones are found. In 1967, Manuel de Sousa discovered these stones in Tanzania. Tanzanite was first known as "Blue Zoisite" but it was renamed by Tiffany & Co. 

In 2002, these beautiful blue and purple variety of gemstone was added on the birthstone list by the American Gem Trade Association. As these stones were recently discovered, they don't hold much of history.

Formation Process

Mount Kilimanjaro was formed due to the movement of tectonic plates and an excessive amount of heat. During this process, The Mozambique Orogenic Belt, one of the most mineral-rich places was created and many geologists and researchers believed that Tanzanite was formed in this process.


The chemical formula of Tanzanite is Ca₂Al₃(SiO₄)₃(OH). These stones have a hardness of 6.5 on the Mohs scale and they have a vitreous luster.


AAA Quality Blue Tanzanite.
AAA Quality Blue Tanzanite.
Image Source:

Tanzanite is a beautiful stone that is a type of its own.

Colors Available

  • Royal Blue
  • Indigo
  • Violet/Purple

Mines Available

Tanzanite is mined commercially at only one location, Tanzania and Tanzania One Mining Ltd is the world's largest and most advanced Tanzanite mining company.

Cost Per Carat

World's Largest Tanzanite.
World's Largest Tanzanite.
Image Source: Geology In

Tanzanite's value is determined by its cut, clarity, color, and quality. These stones with rich colors are worth $300-$425 per carat. In 2005, the world's largest rough Tanzanite stone weighing an astounding 16,839 carat was mined by Tanzania One Mining Ltd.


Tanzanite has no industrial use, however, they are used as gemstones in jewelry like - necklace, bracelet, earrings, and ring.

Spiritual Properties

  • Tanzanite is a symbol of dignity and intelligence that helps the wearer to promote psychic powers, happiness, wisdom and heighten one's state of consciousness.
  • These stones help to detoxify the blood, strengthen the immune system, and relieve headache, migraine, depression, and anxiety.
  • It also helps to think clearly, reduce obsessive tendencies, and enhance love and compassion for self and others.


  • Tanzanites are believed by geologists to be formed about 585 million years ago.
  • During the discovery, these stones were been confused with Sapphires.
  • The only known source where these stones can be mined and produced in Tanzania.
  • As Tanzanites are extremely rare, it is believed that their price will highly increase.

Jewelry Stores Near You

  • Zales Corporation, Irving, Texas
  • Tiffany and Co., New York, USA

Online Stores

  • Discount Diamond Store
  • Tiffany & Co.

Visit Stoneharu for more information about stones and gems.