DECEMBER BIRTHSTONE - TANZANITE


Tanzanite is relatively new on the gemstone market, but has left its mark. Its blue-lavender color is rather unique and a wonderful addition to the gemstone palette. Found in Tanzania (hence the name) in 1967, it has since become a well known and widely distributed gemstone. It has become so popular that in October of 2002 the American Gem Trade Association (AGTA) announced that tanzanite had joined zircon and turquoise in the traditional list of birthstones for the month of December. Tanzanite is associated with contentment and understanding.

It has better fire than the tourmaline elbaite or peridot and an adequate hardness. Its only one direction of cleavage is somewhat of a problem because it is oriented with the direction of strongest pleochroism. This would be a problem in most gemstones because that is the direction the gemcutter would usually select to maximize the color. However, with tanzanite the color is usually strong enough anyway.

Pleochroism is very pronounced in tanzanite and is seen as three different color shades in the same stone. In the viewing a tanzanite stone, the colors dark blue, green-yellow and red-purple can be seen, all a result of pleochroism. Lesser stones may have a brownish color due to the mixing of blue, purple and green. These stones are usually heat treated to a deep blue color. Iolite is a blue-violet gemstone variety of the mineral cordierite, has strong pleochroism and can be confused with tanzanite. However, iolite is usually less strongly colored, its pleochroic colors vary from blue-violet to yellowish gray to blue and it has less fire.

Nearly all tanzanite has been heat treated to generate the beautiful violet-blue color this stone is known for.  When first mined, most stones are a muted green color. The only known source of Tanzanite is a five square mile hilltop at Merelani, ten miles south of the Kilimanjaro International Airport in Tanzania.

Tanzanite is the gem variety of the mineral Zoisite.

For natural tanzanite mineral specimens see our For Sale or Sold lists

Tanzanite Jewelry - Hover over an item for more information
1.73 TCW Oval-Cut Amethyst, Tanzanite and Black Spinal Ring in Platinum over Sterling Silver
. Cast a spell with this stunning amethyst, tanzanite and black spinel scorcher. Spinel is a deep, dark stone that is in the French crown jewels! Set in platinum over sterling silver. Sizes 6-9.Only $85.49 at PalmBeachJewelry
no photo1.73 TCW Oval-Cut Amethyst, Tanzanite and Black Spinal Ring in Platinum over Sterling Silver
$85.49
PalmBeachJewelry
Tanzanite Bezel Drop Earrings in 14k White Gold, One Size
Make a statement with these bezel drop earrings, featuring a rich tanzanite gemstone framed in 14k white gold.Only $295.00 at Blue Nile
no photoTanzanite Bezel Drop Earrings in 14k White Gold, One Size
$295.00
Blue Nile
Cocktail Round Diamond Oval Tanzanite Engagement Ring
Express your sentiments with this alluring vintage ring from Angara. Show her your fashion-forward choice that has a mix of antique glamor to give her a perfect engagement ring. This Victorian Ring from the Vintage Collection has detailed motifs...Only $919.00 at Angara.com
no photoCocktail Round Diamond Oval Tanzanite Engagement Ring
$919.00
Angara.com
14K Yellow Gold Bracelet with Tanzanite - Gemstones By The Yard Heart Bracelet
A layerable essential, handcrafted in your choice of gems and metals, featuring a heart in pave-set gemstones. Adjustable 7-7.5 chain."Only $485.00 at Gemvara
no photo14K Yellow Gold Bracelet with Tanzanite - Gemstones By The Yard Heart Bracelet
$485.00
Gemvara
Round Aquamarine Sterling Silver Ring with Tanzanite & Sapphire - Venus Band
Scalloped shells form a fluted pattern on each side of this feminine tapered band, carefully handcrafted in your choice of gems and metals.Only $205.00 at Gemvara
no photoRound Aquamarine Sterling Silver Ring with Tanzanite & Sapphire - Venus Band
$205.00
Gemvara
Round Tanzanite Sterling Silver Ring with Aquamarine & Citrine - Venus Band
Scalloped shells form a fluted pattern on each side of this feminine tapered band, carefully handcrafted in your choice of gems and metals.Only $205.00 at Gemvara
no photoRound Tanzanite Sterling Silver Ring with Aquamarine & Citrine - Venus Band
$205.00
Gemvara
Round Tanzanite Sterling Silver Ring with White Sapphire & London Blue Topaz - Venus Band
Scalloped shells form a fluted pattern on each side of this feminine tapered band, carefully handcrafted in your choice of gems and metals.Only $205.00 at Gemvara
no photoRound Tanzanite Sterling Silver Ring with White Sapphire & London Blue Topaz - Venus Band
$205.00
Gemvara
The Embrace Tanzanite Ring
Design highlights the center stone while the side stones are accents that add sparkle. Split shank mounting angles create a geometric mix of white space and metal. Classic three stone design with a contemporary twist.Only $649.00 at Angara.com
no photoThe Embrace Tanzanite Ring
$649.00
Angara.com
Round White Sapphire Sterling Silver Ring with Iolite & Tanzanite - Venus Band
Scalloped shells form a fluted pattern on each side of this feminine tapered band, carefully handcrafted in your choice of gems and metals.Only $205.00 at Gemvara
no photoRound White Sapphire Sterling Silver Ring with Iolite & Tanzanite - Venus Band
$205.00
Gemvara
Round Aquamarine Sterling Silver Ring with Rock Crystal & Tanzanite - Venus Band
Scalloped shells form a fluted pattern on each side of this feminine tapered band, carefully handcrafted in your choice of gems and metals.Only $200.00 at Gemvara
no photoRound Aquamarine Sterling Silver Ring with Rock Crystal & Tanzanite - Venus Band
$200.00
Gemvara
3.30ct t.w. Tanzanite, .10ct t.w. Diamond Bangle Bracelet in Silver
Reminiscent of the Art Deco period, we bring you this dramatic bangle bracelet with charismatic style. 3.30 ct. t.w. tanzanites are intertwined with .10 ct. t.w. diamonds. Box clasp and hinge, sterling silver bracelet.Only $295.00 at Ross-Simons
no photo3.30ct t.w. Tanzanite, .10ct t.w. Diamond Bangle Bracelet in Silver
$295.00
Ross-Simons
Sterling Silver Ring with Tanzanite - Daisy Ring
This nature-inspired ring is the perfect everyday choice with a pretty petite gem-set bloom on a delicate modern band. Wear more than one to create a bouquet for your finger.Only $180.00 at Gemvara
no photoSterling Silver Ring with Tanzanite - Daisy Ring
$180.00
Gemvara
Sterling Silver Necklace with Tanzanite - Love Letters 'E' Pendant With Gem
You choose the lowercase letter below and the meaning behind it. Artisans handcraft the precious metal of your choice in a single flowing line, and accent the design with your favorite gem. The chain threads directly through the letter.Only $140.00 at Gemvara
no photoSterling Silver Necklace with Tanzanite - Love Letters 'E' Pendant With Gem
$140.00
Gemvara
Tanzanite Chip Torsade Necklace With Sterling Silver. 18"
Make a color splash statement with this multi-strand purple tanzanite chip torsade necklace! Wears wonderfully with both your casual t-shirt and jeans and LBD- little black dress! Includes 3" extender. Necklace is presented with a sterling silver...Only $87.50 at Ross-Simons
no photoTanzanite Chip Torsade Necklace With Sterling Silver. 18"
$87.50
Ross-Simons
1.37 CT TW Tanzanite Ring in Sterling Silver
. This beaming blue ring steals the spotlight with its ultimate show of glittering round tanzanite. 1.37 carats T.W. Sterling Silver. Sizes 6-9. (Carat weights may vary by plus or minus 5% of stated carat weight.)Only $142.49 at PalmBeachJewelry
no photo1.37 CT TW Tanzanite Ring in Sterling Silver
$142.49
PalmBeachJewelry
 


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