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 …
Its name comes from the term jade. It is the nineteenth century, in 1863, that jadeite was differentiated from nephritis. This is a pyroxene resulting from metamorphism of serpentines high in sodium. Before the nineteenth century both jadeite and nephrite were called with the generic
This plagioclase was discovered in 1770 in the Labrador region in Canada, which gave it its name. It is part of the albite-anorthite series. Its characteristic is a set of iridescent colors that can be observed by changing its position relatively to the light, this
Its name comes from the Latin ebur”, “eboris” which is an animal substance known since prehistoric times : the famous lady Brassempouy of the Saint-Germain-en-Laye Museum is famous worldwide, ivory has been used in antiquity, the middle ages, the renaissance period to the “art Deco”
The German mineralogist Breithaupt described and identified it in 1817. Its name comes from the angle formed at its cleavage, in Greek “Amblus” meaning “obtuse” and “Gonia” which means “angle”, as opposed to scapolite with which it was often confused. It forms a continuous series
