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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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oval cut scheelite from China

scheelite

It is named after the Swedish chemist Karl W. Scheel (1742-1786) who discovered the tungstic acid. Tungsten is the current name of the chemical that was the metal component of wolframite, scheelite is still called a wolframate or tungstate …

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scapolite from Tanzania drop cut

scapolite

It owes its name to its prismatic facies (from the Greek “skapos” rod and “lithos”, stone) and designates an isomorphic series going from sodic marialite to calcic meionite. The members of this series are the Wernerite, the Dipyre, the Meionite, the Marialite. The Wernerite, which

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rutile as inclusions in quartz

rutile

Discovered by Werner in 1803 he was named after the Latin “rutilus” which means red. This is a titanium oxide as brookite and anatase, which crystallize in different crystal systems. The fibrous variety that forms tiny needles was called Sagenite.

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yellow rhodizite from Madagascar

rhodizite

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

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emerald cut pyrargyrite

pyrargyrite

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.

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emerald cut proustite

proustite

Its name honors Joseph-Louis Proust, French chemist (1754-1826).

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