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 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, according to Pliny, from Obsidius who brought it from Ethiopia, which would have led the Romans to call it “obsidius lapis”. From the seventeenth century we find the names of hyalopsite, mountain mahogany, Iceland black agate, mirror of the Incas, gallinaceous stone
Its name comes from the Greek “lepidos” for scale and “lithos” meaning stone, meaning a stone formed of scales stacked in staircase shape. Discovered in Moravia, Czech Republic, it is very close to another mica called muscovite, and for some it is not really a
This is an organic material, a black variety of lignite containing 70% of carbon, resulting from the coalification of wood under anaerobic conditions (without oxygen) and under strong pressure, it is a fossil gem. Its name comes from old French “jayet” or “jaiet” or the
