Partially etched diamond crystal
Partially etched diamond crystal
Inclusions of hematite in feldspar (sunstone), India
Inclusions of hematite in feldspar (sunstone), India
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Natural etching structure on a crystal face of diamond (trigons), polarised light
Natural etching structure on a crystal face of diamond (trigons), polarised light
Twin-crystal of chrysoberyl
Twin-crystal of chrysoberyl
Two-phase inclusions in sapphire, Sri Lanka
Two-phase inclusions in sapphire, Sri Lanka
Dumortierite in rock crystal, Brazil, polarised light
Dumortierite in rock crystal, Brazil, polarised light
Agate from Reichweiler, Germany
Agate from Reichweiler, Germany
 
 

Current

National course 6 - 8 May 2018 Hotel de la Paix, Lugano, Ticino

 
 
 
 

 
 

REGIONAL COURSES:

Suisse Romande: September 30 and October 1, 2018 Lavaux region

Bern: Munich 26-28 October 2018

Basel / Solothurn / Aargau and Central Switzerland: Date to be announced

Zurich: Date to be announced

East Switzerland / Liechtenstein: Wildhaus 24-25 September 2018

Ticino: Acquacalda 22-23 September 2018