vitreous
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 …
actualités
aquamarine
ck_admin
March 24, 2021
Its name comes from the latin “aqua marina”, meaning “water of the sea”, because of its seawater color, the dark blue is the most desidered color…like the ocean! Belongs to the beryl group, same as Emerald which is a deep green beryl. Aquamarines have been
agate
ck_admin
March 24, 2021
This is a quartz, more exactly a transluscent chalcedony (itself a variety of cryptocrystalline quartz) which shows concentric bands sometimes containing opale. Comes in many colors, banded, forming concentric bands, more or less circular up to oval. Their formation is so far discuted : or
aegirine
ck_admin
March 24, 2021
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,
adamite
ck_admin
March 24, 2021
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
