«Red fox agate» from Patagonia, Argentina
Inclusion of apatite in ruby from Tanzania
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
Two-phase inclusion in amethyst, Brazil
Stress fissure («sun spangle») in baltic amber
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Inclusions of hematite in aquamarine, Tanzania

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