Inclusions of fossil plant debris in opal from Wollo, Ethiopia
Two-phase inclusion in amethyst, Brazil
Natural etching structure on a crystal face of diamond (trigons), polarised light
«Red fox agate» from Patagonia, Argentina
Inclusions of gilalite aggregates in rock crystal from Brazil
Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers

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Save the date: SGG/SSG Zentraltagung 2026

21.06. - 23.06.2026

Deltapark Vitalresort, Gwatt bei Thun

Seehotel Wilerbad, Wilen am Sarnersee