![pyrope garnet from Africa oval cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/pyrope-taille-ovale-afrique83.png)
Cancer
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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![pyrope garnet from Africa oval cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/pyrope-taille-ovale-afrique83.png)
![sunstone form India](https://www.patrickvoillot.com/wp-content/uploads/2021/03/feldspath-aventurine-pierre-de-soleil-inde103.png)
sunstone
It consists of feldspar, mostly plagioclase and mainly oligoclase, some andesine and labradorite and has a characteristic appearance: there is a flicker of small metallic flakes inside an orange mass, this is why it was given the name of sunstone, or héliolite. This orange optical
![opal from Australia](https://www.patrickvoillot.com/wp-content/uploads/2021/03/opale-cabochon-australie110.png)
opal
Its name comes from the Sanskrit “upala” which means precious stone, or the Greek “opallios” and Latin “opalos”. It is distinguished by iridescent reflections depending on the angle of vision, recalling the rainbow, who gave the term “opalescent”. Hydrated silica gel, it does not crystallize.
![faceted hematite](https://www.patrickvoillot.com/wp-content/uploads/2021/03/hematite-ovale162.png)
![“ De Beers Centenary “ diamond](https://www.patrickvoillot.com/wp-content/uploads/2021/03/centenary192.png)
diamond
This gem, the best known and most prestigious, is named after its hardness, “adamant” in Greek, which means unconquerable because there are no known naturally occurring minerals that are harder than it. Pure and white, it has an incomparable brilliance, and it sparkles in all
![cinnabar crystals from China](https://www.patrickvoillot.com/wp-content/uploads/2021/03/cinabre-cristaux.jpg)