![cut augite](https://www.patrickvoillot.com/wp-content/uploads/2021/03/acmite-augite0.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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![cut augite](https://www.patrickvoillot.com/wp-content/uploads/2021/03/acmite-augite0.png)
![native silver crystals from Mexico](https://www.patrickvoillot.com/wp-content/uploads/2021/03/argent-natif-cristaux-mexique2.png)
![thulite of Norway cut in cabochon](https://www.patrickvoillot.com/wp-content/uploads/2021/03/thulite-norvege-cabochon20.png)
zoisite
Identified by Werner in 1805 in the Austrian Alps, it was named after the Austrian Siegmund Zois, Baron von Edelstein (1747-1819). It is part of the epidote group. Its best-known variety is tanzanite which is not a mineral recognized by the International Mineralogical Commission for
![natural crystallized zincite from Franklin, United States](https://www.patrickvoillot.com/wp-content/uploads/2021/03/zincite-franklin-etats-unis21.png)
![yugawaralite emerald cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/yugawaralite-taille-emeraude22.png)
![wolframite emerald cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/wolframite-taille-emeraude23.png)
wolframite
Its name comes from the german, “ wolfram” being the name of tungsten, which is its main component. The hubnerite variety is rich in manganese, of a rather red color, transparent and in slices, it was named after the german Adolph Huebner. The ferberite variety