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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 …

coral

ck_admin March 24, 2021

For the geologist, the mineralogist and the gemologist, it is neither a mineral or a fossil, or even a rock. This is the central limestone axis around which small polyps have developed, they secrete it and shelter there. These are animals of the Coelenterata phylum

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colemanite

ck_admin March 24, 2021

It pays tribute to W. Coleman (1824-1893), founder of the borax industry in California.

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cinnabar

ck_admin March 24, 2021

Its name comes from the Persian “zinjifrah” or Latin “cinnabaris” … It is known since antiquity, it was described by Theophrastus in 315 BC. It was used as a red pigment. This is the main ore of mercury, all the mercury compounds are highly toxic.

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charoite

ck_admin March 24, 2021

Long known for its “magic”virtues, its name derives from the translation of its name in Russian. It would have been studied in Russia in the 1940s but hasn’t been identified as a new species until 1978 and since then known worldwide ..

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