\ Birthstones \ December Birthstones \ Tanzanite Gemstone Overview

Tanzanite: The Rare Beauty Gem

Tanzanite is a breathtaking blue-violet gemstone known for its exceptional color and rarity. As one of December's three birthstones, tanzanite's vibrant hues, modern history, and limited geographic origin make it a true treasure.

Key Qualities of Tanzanite

Recognized by the American Gem Society as one of December's birthstones, the tanzanite stone is admired for its vivid color, rarity, and radiant brilliance.

Its striking appearance and limited supply make it a unique find for jewelry sets and memorable celebration gifts.

Color

Color

Known for its rich blue to violet color
Endemic

Endemic

Only found in one place in the world

Pleochroism

Pleochroism

Displays pleochroism (shows off different colors from different angles)

What Makes Tanzanite Different

How does tanzanite stand out from other gems? Tanzanite is one of the rarest gemstones in the world because it’s only mined in a small area near Mount Kilimanjaro in Tanzania.

  • Displays in beautiful hues of blue, violet, and purple
  • Exhibits strong pleochroism, showing different colors depending on the viewing angle
  • Naturally rare due to its single geographic source
  • Typically heat-treated to enhance its signature blue-violet color

Although it is a rare find, its mesmerizing color has made tanzanite one of the most sought-after modern gemstones.

Is the Tanzanite Stone Right for You?

Emotional Triggers

Tanzanite may be the right choice if:

  • You appreciate exclusive gems
  • You love rich blue and violet tones
  • You're looking for a significant yet meaningful gift

Use Cases

Tanzanite is often picked for:

  • December birthday gifts
  • Anniversary and milestone jewelry sets
  • Earrings, pendants, and statement rings
  • Custom fine jewelry pieces

Tanzanite Gem Origins & Variations

Unlike most birthstone gems, tanzanite has only one known commercial source.

Merelani Hills, Tanzania

Located near Mount Kilimanjaro, this small mining region is the most exclusive source of gem-quality tanzanite throughout the world.

Color Variations

Although all tanzanite gemstones come from the same region, they can display in varying shades of blue, violet, and purplish-blue depending on the crystal orientation and treatment.

Because of its single origin location, tanzanite is considered one of the rarest commercially available gemstones to date.

What Determines Tanzanite Value

Understanding these value factors can help you decide on the right tanzanite gemstone for your needs and personal style.

  • Color: The most valuable tanzanites showcase a saturated blue with violet undertones. Deep, vivid colored gems tend to generally be more expensive.
  • Clarity: High-quality tanzanite stones are typically eye-clean, with minimal visible inclusions.
  • Cut: Because of its pleochroic design, skilled cutting helps showcase the gemstone’s best color. Popular shapes for this December birthstone includes oval, cushion, emerald, and pear cuts.
  • Carat Weight: Larger tanzanites with bold color and extraordinary clarity are significantly rarer and more valuable.

What Is a Tanzanite?

Tanzanite is the blue-violet variation of the mineral zoisite. First discovered in 1967, its remarkable color, rarity, and brilliance helped it quickly become one of the most celebrated gemstone discoveries of the 20th century among collectors and jewelry enthusiasts alike.

History of Tanzanite

Discovered in northern Tanzania in 1967, tanzanite was later introduced to the world by Tiffany & Co., which named the gemstone after its country of origin. Today, tanzanite remains one of the few gemstones only found in a single location on Earth.

Meaning & Symbolism 

Tanzanite is typically chosen as a symbol for transformation, wisdom, and new beginnings.

  • Deep Blue Tanzanite: Symbolizes wisdom, confidence, and inner strength.
  • Blue-Violet Tanzanite: Represents intuition, creativity, and spiritual growth.
  • Violet Tanzanite: Often picked for inspiration, compassion, and emotional balance.

Many people choose a tanzanite gemstone to commemorate life’s most meaningful milestones and other personal achievements.

Tanzanite Gem FAQs

  • What makes tanzanite different from sapphire? Tanzanite displays both blue and violet hues due to pleochroism, while sapphire generally maintains a more consistent color. Unlike sapphire, tanzanite is also found exclusively in Tanzania (hence its name).

  • Is tanzanite durable enough for daily wear? Tanzanite measures ~6 to 7 on the Mohs scale. While it is used for jewelry, it should be worn with care and protected from hard impacts, especially in a ring setting.

  • What month is tanzanite a birthstone for? December.

  • Is tanzanite expensive? Although rarer, tanzanite is generally more affordable than similarly colored sapphires. But keep in mind that gemstones with vivid color, excellent clarity, and larger sizes can be more expensive.

  • How should tanzanite jewelry be cleaned? Clean tanzanite with mild soap, warm water and a soft cloth or brush. It’s highly recommended to avoid ultrasonic cleaners, steam cleaning, harsh chemicals, and sudden temperature changes to help protect the gemstone.

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