![emerald cut willemite](https://www.patrickvoillot.com/wp-content/uploads/2021/03/willemite-taille-emeraude25.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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![emerald cut willemite](https://www.patrickvoillot.com/wp-content/uploads/2021/03/willemite-taille-emeraude25.png)
![cabochon of turquoise from Iran](https://www.patrickvoillot.com/wp-content/uploads/2021/03/turquoise-matrix-cabochon-iran38.png)
turquoise
This is simply the “Turkish stone” because when this gem came to Europe, it had passed through that country, but it came from Persia. The Greeks called it “callaite”. It was a sacred stone for the Egyptians, Persians, Tibetans, Indians, Mayans, Aztecs and Incas. Color
![triphyllite from Brazil](https://www.patrickvoillot.com/wp-content/uploads/2021/03/triphyllite-bresil41.png)
triphylite
Its name comes from the Greek “tria” for 3 and “phylon” family to signify that it contains three cations because it was believed that it contained lithium, magnesium and iron.
![green tremolite of Tanzania oval cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/tremolite-ovale-tanzanie42.png)
tremolite
She was named in 1789 by the mineralogist J.G.A. Höpfner in relation to its supposed place of discovery: the Val Tremola in the St. Gotthard massif in Switzerland, but the sample was from another valley … Campolungo. Chemically very close to actinolite (tremolite does not
![green chrome titanite cushion cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/titanite-sphene-chromifere45.png)
titanite
Identified in 1795, its name expresses its high content of titanium. It has long been known as sphene, which came from the Greek “sphenos” for corner, which described very well the shape of its wedge-shaped crystals. Brookite, of the same composition, crystallizes in another crystal
![violet taaffeite of Sri Lanka round cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/titanite-sphene-chromifere50.png)