Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
Inclusions of hematite in feldspar (sunstone), India
Fire opal, Mexico
Dumortierite in rock crystal, Brazil, polarised light
Inclusions of fossil plant debris in opal from Wollo, Ethiopia
Dendrites in agate
Two-phase inclusions in tourmaline from Namibia
Stress fissure («sun spangle») in baltic amber

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