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What Is Tanzanite?
Tanzanite is a striking blue-violet gemstone that belongs to the zoisite mineral family. It is found exclusively in one small area near Mount Kilimanjaro in northern Tanzania, making it one of the rarest gemstones on Earth. Known for its pleochroic nature, tanzanite can display different colors — primarily blue, violet, and burgundy — depending on the angle of light.
Discovered in 1967, tanzanite quickly gained popularity for its vivid color and unique origin. Today, it is a sought-after gemstone for fine jewelry and is considered a modern December birthstone.
Tanzanite Meaning
Tanzanite is often associated with transformation and spiritual growth. Many believe it symbolizes insight, intuition, and a deeper connection to one's higher self. As a relatively recent discovery, its modern symbolism resonates with themes of renewal, creativity, and emotional clarity.
Tanzanite Color
Tanzanite is best known for its rich blue-violet hues. The most valuable gems exhibit a saturated royal blue with flashes of violet. Lighter or more purplish gems are more common and generally more affordable.
The gem's color can appear different under various lighting conditions. Incandescent light brings out more violet tones, while daylight enhances the blue. This phenomenon, called pleochroism, is a key characteristic of tanzanite.
Tanzanite Properties
Mohs Hardness
6 to 7
Mineral
Zoisite
Refractive Index
1.685 to 1.707
Tanzanite Price
Tanzanite’s value depends on its color, clarity, carat weight, and cut quality. Deeply saturated blue-violet gemstones with minimal inclusions are the most valuable. While generally more affordable than diamonds, high-quality tanzanite can rival or exceed the price of other colored gemstones like sapphire.
Because it is sourced from only one location and supply is finite, tanzanite is expected to remain a valuable and sought-after gem.
Tanzanite Origins
Tanzanite is found exclusively in the Merelani Hills of northern Tanzania, near Mount Kilimanjaro. No other deposits have been discovered worldwide, which contributes significantly to its rarity and value.
Tanzanite Facts
- Tanzanite was discovered in 1967 and named by Tiffany & Co.
- It is only found in a 4-kilometer area in Tanzania.
- It exhibits strong pleochroism — showing different colors from different angles.
- Tanzanite is the modern birthstone for December.
Tanzanite Cleaning & Care Tips
Follow these steps to clean tanzanite:
- Fill a small bowl with lukewarm water and add a few drops of mild dish soap.
- Gently place the tanzanite jewelry in the solution and let it soak for 10–15 minutes.
- Use a soft toothbrush or cloth to lightly scrub the stone and setting, paying close attention to crevices.
- Rinse thoroughly with clean lukewarm water to remove any soap residue.
- Dry with a lint-free cloth and allow the piece to air dry completely before storing.
Avoid using ultrasonic or steam cleaners, which can damage the gem, and never expose tanzanite to sudden temperature changes or harsh cleaning agents. To protect your tanzanite jewelry, make sure to store separately to prevent scratching from harder gemstones. Be sure to remove tanzanite jewelry before engaging in physical activities or using harsh chemicals.
