carbonates
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
gaylussite
ck_admin
March 24, 2021
Identified in 1826 in Venezuela, its name honors the French chemist Gay-Lussac (1778-1850).
coral
ck_admin
March 24, 2021
For the geologist, the mineralogist and the gemologist, it is neither a mineral or a fossil, or even a rock. This is the central limestone axis around which small polyps have developed, they secrete it and shelter there. These are animals of the Coelenterata phylum
