Spinel crystal in dolomite marble, Burma
Agate from Reichweiler, Germany
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Stress fissure («sun spangle») in baltic amber
Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
Dendrites in agate
Two-phase inclusions in tourmaline from Namibia
Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil

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