Inclusions of hematite in aquamarine, Tanzania
Two-phase inclusion in amethyst, Brazil
Stress fissure («sun spangle») in baltic amber
Dendrites in agate
Dumortierite in rock crystal, Brazil, polarised light
Inclusions of fossil plant debris in opal from Wollo, Ethiopia
«Red fox agate» from Patagonia, Argentina
Midge included in amber from the Baltic coast, polarised light
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