Dumortierite in rock crystal, Brazil, polarised light
Inclusions of hematite in aquamarine, Tanzania
Bubbles and swirls in moldavite (natural glass)
Fluid inclusions containing mica and quartz, in aquamarine from Pakistan
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Agate from Anzi, Maroc
Structure in a healing fissure in topaz from Brazil
Two-phase inclusion in amethyst, Brazil

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