richterite
ck_admin
March 24, 2021
Discovered in 1865, its name honors the German mineralogist Theodor Richter (1824-1898).
purple
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 …
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poudretteite
ck_admin
March 24, 2021
It owes its name to “Poudrette Quarry” in Mont Saint-Hilaire in Canada where it was discovered. The deep pink gem variety can be cut and was not discovered until 2001.
opal
ck_admin
March 24, 2021
Its name comes from the Sanskrit “upala” which means precious stone, or the Greek “opallios” and Latin “opalos”. It is distinguished by iridescent reflections depending on the angle of vision, recalling the rainbow, who gave the term “opalescent”. Hydrated silica gel, it does not crystallize.
muscovite
ck_admin
March 24, 2021
Discovered by the famous mineralogist James Dwight Dana in 1850, it owes its name to the “glass of Moscow” (vitrum muscoviticum), as the large plates, heat-resistant were used as windows for stoves and furnaces in this region. The hardness varies from one to two depending
