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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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manganotantalite rectangular cut

tantalite

ck_admin March 24, 2021

In the family of colombo – tantalites the tantalites can be high in iron or manganese. The iron-rich variety is sometimes called niobite. The rich in manganese, manganotantalite.

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sugilite from Wessels Mine, Kalahari in South Africa, cabochon cut

sugilite

ck_admin March 24, 2021

It was discovered in 1944 in Japan, its name honors the Japanese geologist Ken-ichi Sugi (1901-1948) who has identified it. But it was not until the late 1970s that a purple manganiferous variety from South Africa has been used in jewelry. There is also another

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cushion cut spinel from Tanzania

spinel

ck_admin March 24, 2021

This is a gem belonging to a group of minerals close to each other and it was many times qualified as liar because it is present in the same deposits of the ruby and sapphire and it has often been confused with these gems. Some

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cabochon of hackmanite from Afghanistan

sodalite

ck_admin March 24, 2021

This is a feldspathoid, his name refers to its high sodium content. Its purplish-blue color is often streaked with white feldspar veinlets. The Hackmanite is a pink-purple variety discovered in Quebec, Canada. In its formula sulfur has been replaced by chlorine, and has an amazing

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smithsonite cut in cabochon

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.

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trillion cut sinhalite from Sri lanka

sinhalite

ck_admin March 24, 2021

Discovered in 1952 in Sri Lanka and recognized as a specific mineral species, as previously mistaken for peridot. Its name comes from the Sanskrit “Sinhala”, Ceylon, the ancient name of Sri Lanka. Stone of a good hardness.

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