![wulfenite from U.S. square cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/wulfenite-taille-carree-usa32.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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![wulfenite from U.S. square cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/wulfenite-taille-carree-usa32.png)
![emerald cut willemite](https://www.patrickvoillot.com/wp-content/uploads/2021/03/willemite-taille-emeraude25.png)
![thorite round cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/thorite-ronde46.png)
![cushion cut sphalerite from Picos de Europa, Santander in Spain](https://www.patrickvoillot.com/wp-content/uploads/2021/03/sphalerite-coussin-espagne59.png)
sphalerite
Its name comes from the Greek “sphaleros” meaning traitor, deceitful, because in its black variety it looked like galena but did not release lead during fusion … and because of its brightness was also confused with the diamond. It is the major ore of zinc.
![spessartine mandarine garnet oval cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/spessartite-grenat-mandarine-ovalel-tanzanie60.png)
spessartine
Its name comes from the cottage of Spessar sur- le -Main in Bavaria. The finest ones come from Africa, in Namibia, from a recently discovered deposit that produced the famous “tangerine”garnets, of a very bright color and a beautiful shine, and that seems exhausted. The
![simpsonite from Brazil oval cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/simpsonite-ovale-bresil68.png)
simpsonite
It was discovered in Australia and its name honors the Australian mineralogist Edward Sydney Simpson (1875-1939).