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 …
Identified in 1825 in Bohemia in iron deposits, its name comes from the Greek “kakos”, for bad, and “xenos”, for guest or stranger to indicate that its presence in the iron ore was not appreciated: this phosphate makes the metal iron ore work, harder. The
Identified by Berzelius its name is related to the Greek word “xenos”, meaning stranger, because the crystals were not discovered until later and it was long called Cenotime. It forms a series with the chernovite and is a rare earth phosphate, more often Yttrium but
Its name honors the Finnish mineralogist Väyrynen who identified it in Finland but the pink samples and gems come from the Paproke mine in Afghanistan.
Discovered in 1865 its name comes from Greek showing that its chemical formula was a real “mystery” to solve.
This is a thick microcrystalline rock the of amphibole family, we can consider nephrite as a microcrystalline variety of ferrous actinolite-tremolite series. The majority of nephrites are composed mainly of actinolite. The white variety, known as” mutton fat “, is composed almost exclusively of tremolite,
