Spinel crystal in dolomite marble, Burma
Two-phase inclusions in sapphire, Sri Lanka
Structure in a healing fissure in topaz from Brazil
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Agate from Reichweiler, Germany
Partially etched diamond crystal
Stress fissure («sun spangle») in baltic amber
Bubbles and swirls in moldavite (natural glass)

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