Inclusions of gilalite aggregates in rock crystal from Brazil
Stress fissure («sun spangle») in baltic amber
Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Natural etching structure on a crystal face of diamond (trigons), polarised light
Two-phase inclusions in tourmaline from Namibia
Agate from Reichweiler, Germany
Two-phase inclusion in amethyst, Brazil

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