Bubbles and swirls in moldavite (natural glass)

Fluid inclusions containing mica and quartz, in aquamarine from Pakistan

Two-phase inclusions in tourmaline from Namibia

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

Agate from Reichweiler, Germany

Spinel crystal in dolomite marble, Burma

Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil

Inclusions of hematite in aquamarine, Tanzania

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