![cabochon of turquoise from Iran](https://www.patrickvoillot.com/wp-content/uploads/2021/03/turquoise-matrix-cabochon-iran38.png)
waxy
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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![cabochon of turquoise from Iran](https://www.patrickvoillot.com/wp-content/uploads/2021/03/turquoise-matrix-cabochon-iran38.png)
![tugtupite cabochon from Greenland](https://www.patrickvoillot.com/wp-content/uploads/2021/03/tugtupite-cabochon-groenland39.png)
tugtupite
Mineral discovered in 1960 simultaneously in the Kola Peninsula (Russia) and south of Greenland, its name comes from an Inuit word meaning ” Reindeer blood ” (“tugtup” means reindeer in Eskimo). Stone of a beautiful color. Without light it loses its color, and after returning
![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
![rose carved in coral from Torre del Greco, Italy](https://www.patrickvoillot.com/wp-content/uploads/2021/03/corail-rouge-rose198.png)
coral
For the geologist, the mineralogist and the gemologist, it is neither a mineral or a fossil, or even a rock. This is the central limestone axis around which small polyps have developed, they secrete it and shelter there. These are animals of the Coelenterata phylum
![cabochon of carnelian mounted as breastpin](https://www.patrickvoillot.com/wp-content/uploads/2021/03/cornaline-cabochon-broche224.png)
chalcedony
Chalcedony: This is a term including microcristallines and cryptocrystalline varieties of quartz, which come from the Greek name of the famous city of Carthage “Karkêdon”. Extracted in Egypt and Syria, it has been used since ancient times for intaglios and cameos, an active trade with