translucent

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 …

thorite

ck_admin March 24, 2021

Discovered in 1829, its name comes from its composition rich in thorium. It is highly radioactive and only since a short time. there are interesting samples for gemology.

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thaumasite

ck_admin March 24, 2021

Discovered in Sweden in 1878, its name comes from the Greek “thaumasion” which means surprising, in relation to its amazing chemical composition.

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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

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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