purple
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
iolite
ck_admin
March 24, 2021
It was also known as “dichroïte” (because of its strong dichroism) or “iolite” (because of its purple color), the anglo-saxons still call it by that name. It honors the name of the French geologist Cordier, Professor at the National Museum of Natural History in Paris.
carrollite
ck_admin
March 24, 2021
Its name comes from the locality where it was identified by Faber in 1852: the Patapsco mine in Carroll County, Maryland in the United States. It is part of the linnaeïtes, it forms a series with the violarite, the polydymite, the siegenite according to the
calcite
ck_admin
March 24, 2021
It is known since antiquity, its name comes from the Greek “khalx” for lime. Identified and analyzed from the seventeenth century and then by Rene-Just Haüy to its easy cleavage. Called Iceland spar, the crystals exhibit the phenomenon of double images: a feature seen through
