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 Greek “alabastros” (earlier albatos) which designated a vase without handles, alabaster being used to make perfume vases without handles. Alabaster is an evaporite mineral. It is a massive aggregate of fine-grained variety of gypsum, its softness make it easy to
Described in 1886 by Charles Friedel who named it after the French mineralogist Gilbert Joseph Adam who found this mineral. Its color depends on the metallic ions present : cuproadamite colored by copper is green, manganoadamite colored by manganese is pink-purple such as cobaltoadamite and
Actinolite belongs to the amphibole group, discovered in 1794 by the mineralogist Kirwan. The name actinolite is derived from the Greek “aktis”, meaning “beam” or “ray” and “lithos”, meaning “stone”; referring to the mineral’s radiating fibrous nature. The name “actinolite” was given by René Just
