Inclusions of fossil plant debris in opal from Wollo, Ethiopia
Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
Inclusions of gilalite aggregates in rock crystal from Brazil
Twin-crystal of chrysoberyl
Colour zoning in ruby from Mong-Shu, Burma
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Two-phase inclusion in amethyst, Brazil
Fire opal, Mexico

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