Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Colour zoning in ruby from Mong-Shu, Burma
Inclusions of hematite in aquamarine, Tanzania
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Inclusions of fossil plant debris in opal from Wollo, Ethiopia
Midge included in amber from the Baltic coast, polarised light
Two-Phase inclusions and rutile needles in rock crystal from Brazil
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania

Current

National course June 7 - 9, 2020 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