vitreous
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 …
actualités
amblygonite
ck_admin
March 24, 2021
The German mineralogist Breithaupt described and identified it in 1817. Its name comes from the angle formed at its cleavage, in Greek “Amblus” meaning “obtuse” and “Gonia” which means “angle”, as opposed to scapolite with which it was often confused. It forms a continuous series
almandite
ck_admin
March 24, 2021
It is the most well-known and widely distributed garne, named after its locality Alabandicus or Alabanda, a town in Asia Minor, currently in Turkey.Since Antiquity Pliny the Elder used to qualified it as gem. It was once known as carbuncle, an archaic name given to
allanite
ck_admin
March 24, 2021
Named by Thomas Thomson in 1810 after the scottish mineralogist Thomas Allan. This is a mieral close to epidote and there are 3 types of allanite based on their concentration in cerium, lanthanum, yttrium (rare earth element). The lanthanum variety is radioactive.
alexandrite
ck_admin
March 24, 2021
It is the rariest chrysoberyl variety, named after the future Czar Alexander II because it was discovered in the Ural in 1830, on the day he came of age and because of its 2 colors : green and red were the colors of old Imperialist
