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Tanzanite: December's Enchanting Birthstone

by Natacha Metayer 01 Dec 2023 0 Comments

In the realm of gemology, few gemstones captivate the imagination as profoundly as Tanzanite, December's birthstone. Join me on an exploration of the geological wonders, distinctive properties, and design allure that make Tanzanite a gemological marvel.


What Is Tanzanite? | Tanzanite Gemstone - A Detailed Guide

Photo Credit: SGL Labs

Geological Significance: A Tanzanian Treasure


Tanzanite's story begins in the shadow of Mount Kilimanjaro in Tanzania. Discovered in 1967, this rare gem quickly gained acclaim for its entrancing blue-violet hues. As a gemologist, the geological significance of Tanzanite lies in its exclusive origin, making it a treasure found in only one corner of the globe.


Tanzanite is a variety of the mineral zoisite and owes its stunning color to the presence of vanadium. The gem forms in metamorphic rocks under high-pressure conditions, a unique geological recipe that infuses Tanzanite with its characteristic brilliance.

Unique Gemological Properties: A Dance of Colors


Tanzanite's most distinctive gemological feature is its pleochroism. This phenomenon allows the gem to exhibit different colors when viewed from different angles. Gemologists marvel at the dance between blue, violet, and sometimes burgundy tones that Tanzanite reveals, offering a dynamic kaleidoscope within a single stone.


Tanzanite is trichroic, displaying three colors. Gemologists observe this mesmerizing interplay of colors, a testament to the gem's crystal structure. Understanding Tanzanite's trichroism is crucial for evaluating its quality and ensuring its optimal presentation in jewelry designs.

Jewelry Design Possibilities: Crafting with Elegance

The Royal Blue-Violet Hue:

As a jeweler, I appreciate the challenge of capturing Tanzanite's royal blue-violet hue in jewelry designs. From timeless solitaire rings to intricate pendant settings, Tanzanite's color lends itself to both classic and contemporary styles.

Complementary Gemstones:

Pairing Tanzanite with complementary gemstones enhances its beauty. I often explore combinations with diamonds, sapphires, or even contrasting hues like citrine to create visually stunning and harmonious designs.

Custom Tanzanite Pieces:

Tanzanite's uniqueness makes it a preferred choice for custom jewelry. Gemologists work closely with clients to craft bespoke pieces that celebrate the individuality of Tanzanite. The gem's dynamic colors offer endless possibilities for creating one-of-a-kind designs.

Caring for Tanzanite: A Gemologist's Advice

Sensitivity to Heat:

Tanzanite, like many gemstones, can be sensitive to heat. As a gemologist, I advise clients to protect Tanzanite jewelry from exposure to high temperatures, ensuring its color remains vibrant over time.

Gentle Cleaning:

To maintain Tanzanite's brilliance, gentle cleaning with mild soap and a soft brush is recommended. Gemologists stress the importance of avoiding harsh chemicals that may compromise the gem's luster.

Proper Storage:

Gemologists emphasize proper storage to prevent Tanzanite from scratching or being damaged by other jewelry. Separating Tanzanite pieces from harder gemstones ensures their longevity.


In the intricate world of gemology, Tanzanite stands as a testament to the geological marvels that shape our planet. Its pleochroism, trichroism, and captivating color variations offer gemologists and jewelry enthusiasts alike a canvas of elegance and artistic expression.


Do you want to learn more about tanzanite? Enlist JNCY Jewelers' bridal services to help you with the rest.

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