grandidierite
ck_admin
March 24, 2021
Discovered at Andrahomana, near Fort Dauphin in Madagascar. Its name honors the French explorer Alfred Grandidier (1836-1912).
silicates
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
gadolinite
ck_admin
March 24, 2021
Appointed in 1800 in honor of the Finnish mineralogist Johan Gadolin (1760-1852) who isolated the Yttrium element in 1797. This rare earth is used to imitate the diamond, synthetic zirconia oxide, to stabilize it in a cubic form at atmosphere temperature. Gadolinium is one of
friedelite
ck_admin
March 24, 2021
Its name honors the French chemist and mineralogist Charles Friedel (1832-1899).
