Two-phase inclusions in sapphire, Sri Lanka
Two-phase inclusions in sapphire, Sri Lanka
Natural etching structure on a crystal face of diamond (trigons), polarised light
Natural etching structure on a crystal face of diamond (trigons), polarised light
«Red fox agate» from Patagonia, Argentina
«Red fox agate» from Patagonia, Argentina
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Colour zoning in ruby from Mong-Shu, Burma
Colour zoning in ruby from Mong-Shu, Burma
Agate from Reichweiler, Germany
Agate from Reichweiler, Germany
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
 
 

Attualita’

Conferenza nazionale: 7 - 9 giugno 2020 Alpenrose Wildhaus, San Gallo

 
 
 
 

 
 

CORSI REGIONALI:

Suisse Romande: 29 / 30 settembre 2019

Berna: 21 / 22 ottobre 2019

Basilea / Soletta / Argovia e Svizzera centrale: 4 novembre 2019

Zurigo: novembre 2019

Svizzera orientale / Liechtenstein: 16 / 17 settembre 2019

Ticino: 21 / 22 settembre 2019