![scolecite cut in cabochon](https://www.patrickvoillot.com/wp-content/uploads/2021/03/scolecite-cabochon8.png)
colourless
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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![scolecite cut in cabochon](https://www.patrickvoillot.com/wp-content/uploads/2021/03/scolecite-cabochon8.png)
![emerald cut pollucite from afghanistan](https://www.patrickvoillot.com/wp-content/uploads/2021/03/pollucite-afghanistan92.png)
![phosgenite emerald cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/phosgenite-taille-emeraude96.png)
phosgenite
ck_admin
March 24, 2021
Discovered in England, its name comes from the Greek “phos” meaning “light” and “genan” – “which leads “, in connection with its lights characteristic, was given by Haidinger. Karsten, who had described it in the early nineteenth century had named it hornblei.
![phenacite from Burma cushion cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/phenacite-birmanie-coussin-photo97.png)
![olgoclase from Brasil oval cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/oligoclase-ovale-bresil111.png)
oligoclase
ck_admin
March 24, 2021
From the family of plagioclase, its name comes from the Greek “oligo”, a little bit, and “klassos” break, because it is a feldspar whose cleavage is more difficult than for others. It is part of the albite-anorthite series. It was identified by Breithaupt in 1826.
![emerald cut natrolite from Russia](https://www.patrickvoillot.com/wp-content/uploads/2021/03/natrolite-taille-emeraude-russie116.png)