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The Grandidierite

by Julie MIALET 17 Dec 2019

Madagascar’s Paraiba

Grandidierite is one of the rarest gems in the world. This blue-green silicate can make us think about paraïba tourmaline and is just as fascinating.

Discovered at the beginning of the 20th century by Alfred Lacroix, the deposits are mainly found in Madagascar. It was named in honor of the French explorer and naturalist Alfred Grandidier (1836-1921) who studied the natural history of the island.

Some stones have been found in Algeria and New Zealand, however their small size does not allow faceting.

Grandidierite is one of the ten most rare gems in the world.

Very included and generally small, pure stones of more than one carat exceed the price of diamonds. With a hardness of 7.5 on the Mohs scale, cut grandidierite can be set on a necklace, earrings or a ring.


If you are interested in grandidierite, don’t hesitate to discover what les Pierres de Julie have to offer in the store…

We are also available for any free expertise of your grandidierite 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.

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