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 …
Known since antiquity as a “golden beryl”, its name derived from the Greek “khrusos” for gold. Two popular varieties are appreciated gems: the golden yellow variety and the red / green which is called alexandrite. Most chrysoberyls are golden – yellow to brown – green
Discovered in 1817, its name comes from the Greek “chondros” which means grain in connection with its well-formed crystals, isolated in the form of grains.
Discovered in 1823, its name honors the English mineralogist John George Children (1777-1852). It is very close to the eosphorite and in its chemical composition iron is the dominant on manganese, unlike eosphorite where manganese is dominating.
New mineral discovered in 1957 in Texas, in Chambers County (Barber’s Hill salt dome), hence its name. The crystals were found in the brine returns from a gas drilling because it is a borate insoluble in water. Thereafter deposits were discovered in Louisiana, Canada, and
Its name comes from the Greek “chalcos”, which means copper and pyrite: this is a copper pyrites. It was identified in 1725 by Henckel. Chalcopyrite may contain gold in small quantities, it is then exploited for this precious metal.
