conchoidal
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
rhodonite
ck_admin
March 24, 2021
Its name comes from the Greek “rhodon” for “ rose “, as for rhodochrosite. dark pink color, light pink, with black dendritic inclusions of manganese oxide. Soluble in acids which discolor it, easily fuses with a torch. Varieties of colorful gems come from Australia and
rhodizite
ck_admin
March 24, 2021
Discovered in 1834, its name comes from the Greek “pink” because it has the property of coloring the torch flame in pink. It presents the phenomenon of piezoelectricity and pyro-electricity. The rhodizite is one of the poles a series dominated by potassium, the other pole
compact quartz
ck_admin
March 24, 2021
This group includes compact quartz containing inclusions of another mineral which determines the appearance and color. Tiger’s Eye and Hawk Eye: The name comes from the fact that the polished cabochons show a light stripe evoking the split pupil of a tiger, the second name
pyrargyrite
ck_admin
March 24, 2021
Described in 1831 by Glocker, its name comes from the Greek “pyros” meaning fire and “Argyros” for money. It is a silver salt of a fire red color.
