orthorhombic
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
mother-of-pearl
ck_admin
March 24, 2021
Mother-of-pearl or Nacre is the substance that constitutes the inner part of the shell of certain mollusks, its name comes from the Latin “ nacrum “, which was used to describe white matter with iridescent reflections. It consists of a mineral part of calcium carbonate
zoisite
ck_admin
March 24, 2021
Identified by Werner in 1805 in the Austrian Alps, it was named after the Austrian Siegmund Zois, Baron von Edelstein (1747-1819). It is part of the epidote group. Its best-known variety is tanzanite which is not a mineral recognized by the International Mineralogical Commission for
variscite
ck_admin
March 24, 2021
It recalls the old name of Vogtland (southern Saxony, Germany) called Variscia in Latin, where it was discovered in the valley of the Mess. A massive variety, found in the United States (Nevada,) with interpenetration of veinlets or quartz nodules and chalcedony, is called “amatrix”
