Twin-crystal of chrysoberyl
Inclusions of gilalite aggregates in rock crystal from Brazil
Inclusions of fossil plant debris in opal from Wollo, Ethiopia
«Red fox agate» from Patagonia, Argentina
Two-phase inclusion in amethyst, Brazil
Natural etching structure on a crystal face of diamond (trigons), polarised light
Inclusions of hematite in aquamarine, Tanzania
Midge included in amber from the Baltic coast, polarised light

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