Two-phase inclusion in amethyst, Brazil
Two-phase inclusion in amethyst, Brazil
Fluid inclusions containing mica and quartz, in aquamarine from Pakistan
Fluid inclusions containing mica and quartz, in aquamarine from Pakistan
Partially etched diamond crystal
Partially etched diamond crystal
Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
Twin-crystal of chrysoberyl
Twin-crystal of chrysoberyl
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Structure in a healing fissure in topaz from Brazil
Structure in a healing fissure in topaz from Brazil
Fire opal, Mexico
Fire opal, Mexico
 
 

Aktuelles

Nationale Tagung: 7. - 9. Juni 2020 Alpenrose Wildhaus, St. Gallen.

 
 
 
 

 
 

REGIONALE KURSE:

Suisse Romande: 29. / 30. September 2019

Bern: 21. / 22. Oktober 2019

Basel / Solothurn / Aargau und Zentralschweiz: 4. November 2019

Zürich: November 2019

Ostschweiz / Liechtenstein: 16. / 17. September 2019

Tessin: 21. / 22. September 2019