Two-Phase inclusions and rutile needles in rock crystal from Brazil
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Two-phase inclusion in amethyst, Brazil
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Fluid inclusions in quartz with bituminous daughter minerals, China
Spinel crystal in dolomite marble, Burma
Natural etching structure on a crystal face of diamond (trigons), polarised light
Stress fissure («sun spangle») in baltic amber

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