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 …
The moonstone is composed of alkaline feldspar, mainly potassium in other words orthoclase, in its variety “adularia”. This is actually a microperthite resulting from a microscopic phase separation of platelets from a sodium feldspar, the albite, in the orthoclase during the cooling of the mixture
Its name comes from the Sanskrit “upala” which means precious stone, or the Greek “opallios” and Latin “opalos”. It is distinguished by iridescent reflections depending on the angle of vision, recalling the rainbow, who gave the term “opalescent”. Hydrated silica gel, it does not crystallize.
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”
