Info: Tanzanite is relatively new to the colored stone galaxy. This transparent blue gem was discovered by a Tanzanian Jumanne Mhero Ngoma in the Mererani Hills of Manyara Region in Northern Tanzania in 1967, near the city of Arusha and Mount Kilimanjaro.

Tiffany & Co. recognized its potential as an international seller and made to become its main distributor. That’s why almost overnight, tanzanite was popular with leading jewelry designers and other gem professionals, as well as with customers. But there have been wide fluctuations in the gem’s supply and price level, due mostly to Tanzania’s volatile political, social, and economic conditions.

Tanzanite is heat-treated to produce colors that include light to dark violetish blue and bluish purple, as well as pure blue. Rich, deep hues are valued most, but you’ll usually see these only in stones weighing 5 ct. or more.  This is mainly because of decisions made during the cutting process. Tanzanite typically shows strong p

pleochroism, which means it displays different colors from different directions. It usually looks violetish blue from some directions, purplish from others.

Tanzanite is also called a “stone of magic” that helps with spiritual awareness and psychic insight. It is also sometimes called the “workaholic’s stone”.  This is because it helps you slow down and take it easy. This in turn, brings success in more areas of life. It relieves stress and depression, transmutes negativity and enhances composure, poise, and harmony.

Sources: Tanzania

Hardness: 6 to 7 on Mohs scale

Toughness: Fair to poor, due to cleavage and sensitivity to thermal shock

Care and Cleaning: Soapy water is safe

Birthstones: Tanzanite is a birthstone for December, along with turquoise and blue topaz.

Anniversaries: Tanzanite is also the gem for the 24th anniversary.





Essential Colored Stones GIA