Dumortierite in rock crystal, Brazil, polarised light
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Inclusions of fossil plant debris in opal from Wollo, Ethiopia
Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil
Fire opal, Mexico
Fluid inclusions containing mica and quartz, in aquamarine from Pakistan
Natural etching structure on a crystal face of diamond (trigons), polarised light
Spinel crystal in dolomite marble, Burma

Current

National course 30.5.2021 - 1.6.2021 Alpenrose Wildhaus, St Gallen

 
 
 
 

 
 

REGIONAL COURSES:

Suisse Romande: Septembre 29 / 30, 2019

Bern: October 21 / 22, 2019

Basel / Solothurn / Aargau and Central Switzerland: November 4, 2019

Zurich: October 14 / 15, 2019

East Switzerland / Liechtenstein: September 16 / 17, 2019

Ticino: September 21 / 22, 2019