Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania

Two-phase inclusions in tourmaline from Namibia

Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia

Two-phase inclusions in sapphire, Sri Lanka

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

Fluid inclusions in quartz with bituminous daughter minerals, China

Structure in a healing fissure in topaz from Brazil

Inclusions of hematite in feldspar (sunstone), India

Dendrites in agate