Spinel crystal in dolomite marble, Burma
Spinel crystal in dolomite marble, Burma
Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
Midge included in amber from the Baltic coast, polarised light
Midge included in amber from the Baltic coast, polarised light
Agate from Anzi, Maroc
Agate from Anzi, Maroc
Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil
Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil
Fire opal, Mexico
Fire opal, Mexico
Twin-crystal of chrysoberyl
Twin-crystal of chrysoberyl
Structure in a healing fissure in topaz from Brazil
Structure in a healing fissure in topaz from Brazil
 
 

Actuel

Conférence nationale: 7 - 9 juin 2020, Alpenrose Wildhaus, St Gallen.

 
 
 
 

 
 

COURS RÉGIONAUX:

Suisse Romande: 29 / 30 septembre 2019

Berne: 21 / 22 octobre 2019

Bâle / Soleure / Argovie et Suisse centrale: 4 novembre 2019

Zurich: novembre 2019

Suisse Orientale / Liechtenstein: 16 / 17 septembre 2019

Tessin: 21 / 22 septembre 2019