Twin-crystal of chrysoberyl

Midge included in amber from the Baltic coast, polarised light

Structure in a healing fissure in topaz from Brazil

Fluid inclusions in quartz with bituminous daughter minerals, China

Natural etching structure on a crystal face of diamond (trigons), polarised light

Two-Phase inclusions and rutile needles in rock crystal from Brazil

Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light

Two-phase inclusions in sapphire, Sri Lanka

Two-phase inclusion in amethyst, Brazil