perfect
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
beryllonite
ck_admin
March 24, 2021
So called because of the presence of beryllium, it was named by James Dana in 1888.
barytocalcite
ck_admin
March 24, 2021
Discovered in 1824 in England, it was named after its composition, it contains barium as much as barite and it is a carbonate (calcium, as calcite, but with the addition of barium).
baddeleyite
ck_admin
March 24, 2021
Its name honors Joseph Baddeley, who identified it in 1892 in some samples coming from Sri Lanka. This is the basic material used to manufacture synthetic zirconium oxide by the method of autocreuset to 2750 ° C.
