![twinned boleite crystals from Boleo, Mexico](https://www.patrickvoillot.com/wp-content/uploads/2021/03/boleite-cristaux-boleo-mexique231.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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![twinned boleite crystals from Boleo, Mexico](https://www.patrickvoillot.com/wp-content/uploads/2021/03/boleite-cristaux-boleo-mexique231.png)
![square cut bikitaite](https://www.patrickvoillot.com/wp-content/uploads/2021/03/bikitaite-carree234.png)
![beryllonite fancy cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/beryllonite-taille-fantaisie235.png)
beryllonite
ck_admin
March 24, 2021
So called because of the presence of beryllium, it was named by James Dana in 1888.
![heliodore crystal of Madagascar](https://www.patrickvoillot.com/wp-content/uploads/2021/03/beryl-heliodore-cristal-madagascar236.png)
![pear cut benitoite from United States](https://www.patrickvoillot.com/wp-content/uploads/2021/03/benitoite-poire-usa237.png)
![barytocalcite crystals of Mont St.-Hilaire, Canada](https://www.patrickvoillot.com/wp-content/uploads/2021/03/barytocalcite-cristaux-mont-saint-hilaire-canada239.png)
barytocalcite
ck_admin
March 24, 2021
Discovered in 1824 in England, it was named after its composition, it contains barium as much as barite and it is a carbonate (calcium, as calcite, but with the addition of barium).