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 …
This is a fossilized wood dating back 200 million years, all parts of a trunk or branches have been silicified, that is to say that the organic components have been gradually replaced by silica in the form of jasper, chalcedony, or more rarely opal, there
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
