1.04-Carat Round Brilliant Natural Tanzanite


A pretty little 1.04-carat untreated natural tanzanite in a round brilliant design.  Note the pleochromism!

Out of stock


This gem was faceted from an unheated piece of tanzanite–most tanzanite has been heated to remove the greenish-yellow component to make the gem a dark blue to purple-blue. In these images you can see the pleochroic nature of the gemstone if you know what to look for–some of the facets are showing a more violet-blue while others show a more teal blue and others a medium light blue. Natural blue-purple tanzanite like this was heated underground over the millennia and retains a trichroic appearance–showing various shades of blue, green/yellow and violet/red. Heating removes the yellow component, leaving behind the red and blue, creating a deep blue to blue-purple gem.

The gem is 1.04 carats and measures 6.68 x 3.88 mm. It’s cut in a classic round brilliant design and would make a great center stone for a ring.

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