Inclusions of gilalite aggregates in rock crystal from Brazil
Agate from Reichweiler, Germany
Two-phase inclusions in sapphire, Sri Lanka
Spinel crystal in dolomite marble, Burma
Dendrites in agate
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Dumortierite in rock crystal, Brazil, polarised light
Fire opal, Mexico

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