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Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Inclusions of gilalite aggregates in rock crystal from Brazil
Midge included in amber from the Baltic coast, polarised light
Dumortierite in rock crystal, Brazil, polarised light
Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Agate from Anzi, Maroc
Two-phase inclusions in sapphire, Sri Lanka
Natural etching structure on a crystal face of diamond (trigons), polarised light
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