Dendrites in agate

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

Inclusions of gilalite aggregates in rock crystal from Brazil

Fluid inclusions in quartz with bituminous daughter minerals, China

Two-phase inclusions in sapphire, Sri Lanka

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

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

Two-phase inclusion in amethyst, Brazil