![yellow rhodizite from Madagascar](https://www.patrickvoillot.com/wp-content/uploads/2021/03/rhodizite-madagascar79.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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![yellow rhodizite from Madagascar](https://www.patrickvoillot.com/wp-content/uploads/2021/03/rhodizite-madagascar79.png)
![crocidolite hawk’s eye](https://www.patrickvoillot.com/wp-content/uploads/2021/03/oeil-de-faucon-crocidolite-cabochon-bresil80.png)
compact quartz
This group includes compact quartz containing inclusions of another mineral which determines the appearance and color. Tiger’s Eye and Hawk Eye: The name comes from the fact that the polished cabochons show a light stripe evoking the split pupil of a tiger, the second name
![pyrophyllite crystals of Georgia in the U.S.](https://www.patrickvoillot.com/wp-content/uploads/2021/03/pyrophyllite-cristaux-georgie-usa82.png)
pyrophyllite
Uncommon mineral, present in hydrothermal veins. Its name comes from the Greek “pyros” for fire and “phyllos” as sheet, because with the heat this mineral is exfoliating, and swells in superposed sheets.
![oval cut powellite from India](https://www.patrickvoillot.com/wp-content/uploads/2021/03/powellite-taille-ovale-inde90.png)
![phosgenite emerald cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/phosgenite-taille-emeraude96.png)
phosgenite
Discovered in England, its name comes from the Greek “phos” meaning “light” and “genan” – “which leads “, in connection with its lights characteristic, was given by Haidinger. Karsten, who had described it in the early nineteenth century had named it hornblei.
![silver color pearl from Lombok in Indonesia](https://www.patrickvoillot.com/wp-content/uploads/2021/03/perle-silver-culture-lombok-indonesie100.png)