Two-Phase inclusions and rutile needles in rock crystal from Brazil
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Dumortierite in rock crystal, Brazil, polarised light
«Red fox agate» from Patagonia, Argentina
Inclusions of hematite in feldspar (sunstone), India
Fire opal, Mexico
Natural etching structure on a crystal face of diamond (trigons), polarised light
Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil

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