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 …
Identified Only in 1955 by Ekanayake, this is one of the few carved stones that is naturally radioactive. This feature makes it sought as a rare stone by collectors, transparent stones are even rarer. In addition, the radioactivity alters its crystalline structure over time.
Its name honors Eugene Dumortier, a paleontologist from Lyon (France )(1802-1873). It occurs most commonly as quartz inclusions, it is then called “blue aventurine”.
Successively described and analyzed by many specialists since 1851, its a mixture of feldspar, hornblende, biotite (black mica) and quartz. It is considered an intrusive rock with a texture similar to “granite”, the term “granite” designating a hard stone used in civil engineering. The matrix
