Commonly Asked Questions: Tanzanite

Posted on Wednesday, December 26th, 2018 in Commonly Asked Questions, Gemstones, Informational.

tanzanite gemstone

What is tanzanite? Initially discovered in the late 1960s, tanzanite is a bluish-violet gemstone belonging to the zoisite mineral family. It is one of the most sought after gemstones in the world and is prized for its striking color.

Where does tanzanite come from? Found in only one location in the world, all tanzanite gemstones come from northern Tanzania. In fact, the only known deposit of this gemstone is located on a 2.5 square mile hilltop near Mount Kilimanjaro.

Where does a tanzanite’s color come from? A tanzanite’s blue color can be attributed to the presence of trace amounts of vanadium. When heated to a temperature over 1,110 degrees Fahrenheit, vanadium-bearing zoisite will turn into the gorgeous bluish-violet color that the gemstone is admired for.

What determines the value of a tanzanite gemstone? Like other gemstones, the value of a tanzanite is determined by its color, clarity, cut, and carat weight. Color is the most important quality factor in tanzanite gemstones, with those featuring a deep saturated violet blue being the most valuable. Similarly, a tanzanite with very few visible inclusions, an excellent cut, and large overall size will command the highest price tag.

Does tanzanite symbolize anything? One of several birthstones for the month of December, tanzanite is also the designated gemstone for the 24th wedding anniversary. Inspired by the Maasai tradition of wearing blue beads for a healthy and positive new life, tanzanite is also the recognized gift to commemorate the birth of a child.

Can tanzanite jewelry be worn every day? With a rating between 6 and 7 on the Mohs scale of mineral hardness, tanzanite is suitable for everyday wear, but should be worn with care. Tanzanite gemstones can break when struck by a hard object, so it’s important to make sure your tanzanite jewelry is properly protected at all times.

How should I care for my tanzanite jewelry?  Tanzanite jewelry should be cleaned with warm soapy water and a soft brush.


View Kloiber Jewelers’ tanzanite jewelry collection here.