![pink fluorite from Brazil cushion cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/fluorite-rose-taille-coussin-bresil176.png)
cubic
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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![pink fluorite from Brazil cushion cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/fluorite-rose-taille-coussin-bresil176.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
![red cuprite from Namibia oval cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/cuprite-ovale-namibie199.png)
cuprite
Its name comes from the Latin “Cuprum” which means copper, it was discovered by von Haidinger in 1845. The chaloctrichite is a form that looks like thin hair hence the name derived from Greek (copper hair). There are massive varieties mixed with chrysocolla and tenorite
![oval cut carrollite of Congo](https://www.patrickvoillot.com/wp-content/uploads/2021/03/carrollite-ovale-congo220.png)
carrollite
Its name comes from the locality where it was identified by Faber in 1852: the Patapsco mine in Carroll County, Maryland in the United States. It is part of the linnaeïtes, it forms a series with the violarite, the polydymite, the siegenite according to the
![twinned boleite crystals from Boleo, Mexico](https://www.patrickvoillot.com/wp-content/uploads/2021/03/boleite-cristaux-boleo-mexique231.png)
![square cut bixbyite](https://www.patrickvoillot.com/wp-content/uploads/2021/03/bixbyite-taille-carree233.png)