Skip to content

All about jewelry news

The Tanzanite

by Julie MIALET 01 Feb 2024

Tanzanite, the rival of Sapphire….

Rare gemstone, very rare to see, since we only know a single deposit in the world, Tanzanite is about to dethrone his rival sapphire.

The only known mine in the world is located in Tanzania at the foot of Kilimanjaro, near Arusha.

Thousand times rarer than diamonds, Tanzanite fascinated by its purplish blue hues and brightness unusual.

Tanzanite is the blue-violet variety of a mineral called zoisite, discovered for the first time in 1969. It was quickly named "Tanzanite" after its country of birth by Tiffany & Co, the famous jeweller of the 5th Avenue in New York, who introduced it to the United States. The success was immediate!

Famous House who used Tanzanite :

Tiffany, of course, but also Dior Joaillerie and Boucheron have used Tanzanite.

Tiffany "Soleste" Ring, Tanzanite, Diamonds et Platinum, Credit Tiffany

Dior Joaillerie "Dentelle Popeline" Bracelet, Tanzanites, Diamonds, Purple and Pink Sapphires, Sapphires, Tsavorite Garnets, Rubies and Yellow Gold, Credit Dior Joaillerie

Boucheron "Wladimir, The Cat" Ring, Tanzanite, Sapphires, Diamonds and White Gold, Credit Boucheron


His blue-violet often have a depth comparable to the finest sapphires.

The most popular Tanzanite on the market is that of a very bright blue or blue-violet very intense lavender.

Without human intervention, tanzanite has brown hues. It is common and accepted that most Tanzanites are heated.

Tanzanite has a hardness of 6.5 / 7 on the Mohs scale.

Due to a very important cleavage, this stone is fragile, so a rise in tanzanite ring must be worn with great care.

But do not forget, all the stones are fragile! even the diamond ….

If you are interested in tanzanite, don’t hesitate to discover what Les Pierres de Julie offer in our store…

We are also available for any free expertise of your tanzanite jewelry, for that you can send an email with your photos to

Whether you're interested in buying a piece of jewellery or a stone, a free jewelry appraisal or jewelry resale, Pierres de Julie welcomes you to its Parisian boutique in the Village Suisse, a stone's throw from the Ecole Militaire and the Esplanade des Invalides.

Prev Post
Next Post

Thanks for subscribing!

This email has been registered!

Shop the look

Choose Options

Back In Stock Notification
Terms & Conditions
The present General Conditions of Use are up to date on November the 5th 2022

> Read the GCU
this is just a warning