![neptunite emerald cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/neptunite-taille-emeraude114.png)
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Je vous emmène à travers mes vidéos découvrir mon expérience acquise depuis plus de 30 ans a silloner le globe entier à la recherche de pierres précieuses, de rencontre mémorables mais aussi de difficulté parfois …
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![neptunite emerald cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/neptunite-taille-emeraude114.png)
![labradorite crystal from Finland with the phenomenon of blue labradorescence](https://www.patrickvoillot.com/wp-content/uploads/2021/03/labradorite-cristal-labradorescence141.png)
labradorite
ck_admin
March 24, 2021
This plagioclase was discovered in 1770 in the Labrador region in Canada, which gave it its name. It is part of the albite-anorthite series. Its characteristic is a set of iridescent colors that can be observed by changing its position relatively to the light, this
![fancy cut hyalophane from Bosnia](https://www.patrickvoillot.com/wp-content/uploads/2021/03/hyalophane-taille-fantaisie153.png)
hyalophane
ck_admin
March 24, 2021
Discovered in 1855, it owes its name to the Greek “hyalos” – glass-, and “Phanos” – which has the appearance.
![hauyne oval cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/hauyne-taille-ovale164.png)
![cut friedelite from South Africa - kalahari manganese field of Kuruman](https://www.patrickvoillot.com/wp-content/uploads/2021/03/friedelite-kalahari-manganese-field-kuruman-afrique-du-sud175.png)
friedelite
ck_admin
March 24, 2021
Its name honors the French chemist and mineralogist Charles Friedel (1832-1899).
![pink fluorite from Brazil cushion cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/fluorite-rose-taille-coussin-bresil176.png)