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 …
Discovered in 1824 by Beudant Chessy-les-Mines in France, azurite takes its name from its azure blue. It has been known since antiquity, it is a copper carbonate, which effervesces with acids. It is often associated with malachite, green, in copper deposits, as azurite turns into
Named by Thomas Thomson in 1810 after the scottish mineralogist Thomas Allan. This is a mieral close to epidote and there are 3 types of allanite based on their concentration in cerium, lanthanum, yttrium (rare earth element). The lanthanum variety is radioactive.
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
Found in 1821 by P.Ström and named “acmite” from the Greek “point, edge” in reference to the typical pointed crystals. But in 1835 Berzelius named it aegirine after Aegir, the Teutonic god of the sea. Richer in sodium than augite, it oxydizes itself, pruducing chlorite,
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
