About Tanzanite


Tanzanite Description


Intense Violetish Blue Tanzanite

Tanzanite can have an intense and deep violetish blue color.

Tanzanite is the blue to violet to purple variety of the mineral zoisite. It is mined commercially only in one area of the world: the Merelani Hills of Tanzania, which is where it gets its name.

Blue Tanzanite Crystals
When blue crystals were first discovered in Tanzania in the 1960s, no one was quite
sure what the new crystals were. Careful gemological study determined that they were
a transparent variety of zoisite, and the gem came to be known as tanzanite.


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 can be violetish blue—similar to a sapphire color—or much more purplish. Often, both the violetish blue and purplish colors are readily visible in a fashioned stone when it is gently rocked and tilted.


29.22-carat Tanzanite Ring
This 29.22-carat tanzanite has a deep blue color sometimes described as midnight blue. 

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