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
spherocobaltite
ck_admin
March 24, 2021
Its name comes from the Greek “sphaira” for sphere and from its composition with cobalt, which gives it its color, this is a rare stone. It’a a Cobalt Carbonate that is often wrongly called “cobaltoan calcite” Cobaltoan calcite chemically is a pink calcite owed to
sphalerite
ck_admin
March 24, 2021
Its name comes from the Greek “sphaleros” meaning traitor, deceitful, because in its black variety it looked like galena but did not release lead during fusion … and because of its brightness was also confused with the diamond. It is the major ore of zinc.
sogdianite
ck_admin
March 24, 2021
Discovered in 1968 in Tajikistan, it owes its name to Sogdiana, who is the former name of this Central Asian region.
smithsonite
ck_admin
March 24, 2021
Name honoring James Smithson (1765-1829), founder of the Smithsonian Institution in Washington (USA). It is also called bonamite.
sillimanite
ck_admin
March 24, 2021
Discovered in 1824, it honors the name of the American geologist Benjamin Silliman (1779-1864). It is also known for its blue or violet variety called fibrolite. It has been known since prehistoric times and it was used to manufacture cutting tools. There is also a
