Find Your Perfect Natural Loose Tanzenite Gemstone

Presenting 0 natural loose Tanzenite for your consideration.

Found in just one place on earth, Tanzanite is a relatively recent discovery. Tiffany & Co named this blue-violet gem in honor of Tanzania, where it was first unearthed in 1967.


Tanzanite is a birthstone for December and also the gem for a 24th anniversary.


Tanzanite's appearance is influenced greatly by its pleochroism, which is the ability of a gemstone to show different colors when viewed in different crystal directions. Tanzanite's pleochroism was documented in scientific papers not long after its discovery. In 1969, American Mineralogist described the gem's pleochroic colors as `red-violet, deep blue, and yellow green.' Today, most gems are heat treated, which removes or reduces the yellow green or brownish pleochroic color, maximizing the blue and violet.

Top-quality tanzanite can be violetish blue --similar to a fine sapphire color --or a unique, predominately violet hue all its own. Some stones might also appear more purplish depending on how the cutter chooses to orient the fashioned gem. Both the violet and blue pleochroic colors are readily visible in a fashioned stone when it is gently rocked and tilted. This means that every tanzanite is a blend of these pleochroic colors. The exact face-up color depends on the inherent color of the original rough, its size, the pleochroic colors the cutter favors when they orient the fashioned stone, and the light the finished gem is viewed under. Cool lighting --like daylight equivalent fluorescent --will emphasize tanzanite's blue, while warm lighting --like incandescent --will make it appear more violet-to-purple.

Just like other colored gemstones, vivid strongly-colored tanzanites are highly sought after. Lighter toned pastel hues are more plentiful and affordable than vivid colors and have a subtle appeal of their own.



Looking for something else?

The Sapphires listed on this page represent a tiny fraction of our Sapphire inventory including untreated, investment grade Sapphires of remarkable size and quality.

Let us know what you are looking for and we will get in touch with Sapphire options that meet your requirements and exceed your expectations.

Natural Certified Loose SapphiresIceStore Fine Sapphire Department

  • The Sappires that we offer at Icestore are all natural and are ethically sourced from environmentally and socially responsible companies that are committed to upholding the highest levels of internationally recognized environmental, labor and trade standards.
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