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 …
Discovered in 1854, its name comes from the Greek “astron” – star- and “phyllon” – leaf- illustrating the shape of its starry groups of acicular crystals. In gemology, it is known as inclusions in quartz crystals and can be confused with rutile.
It was identified in 1806 by René Just Haüy, its name comes from the Greek “apophylliso” which means “exfoliates”, “that flakes “ … to heat, friction, acid. There are several varieties according to their chemical composition: rich in sodium, it is the natroapophyllite; rich in
Andradite: this variety of garnet has been described and identified by Dana, its name is a tribute to a Brazilian mineralogist Jose Bonifacio de Andrada e Silva (1763-1838). Mélanite : black titanoan variety, its name comes from the Greek “black”. Topazolite : yellow variety of
Identified by Delametherie in 1798, it was named after a Spanish province, Andalusia, where it was found, near Almeria. Chiastolite the variety, also known as “Stone Cross” is a variety of opaque white to gray andalusite, which comes in elongated prisms which, when cut perpendicular
