Midge included in amber from the Baltic coast, polarised light
Fire opal, Mexico
Inclusion of apatite in ruby from Tanzania
Two-phase inclusions in tourmaline from Namibia
Fluid inclusions containing mica and quartz, in aquamarine from Pakistan
Stress fissure («sun spangle») in baltic amber
Two-phase inclusions in sapphire, Sri Lanka
Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil

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