Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil
Partially etched diamond crystal
Inclusion of apatite in ruby from Tanzania
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
«Red fox agate» from Patagonia, Argentina
Two-phase inclusion in amethyst, Brazil
Inclusions of fossil plant debris in opal from Wollo, Ethiopia

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Conférence nationale 2024: Hotel- und Conference Center Sempachersee, Nottwil
09.06. - 11.06.2024

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Hotel Sempachersee