Two-phase inclusions in tourmaline from Namibia

Fluid inclusions in quartz with bituminous daughter minerals, China

Two-phase inclusion in amethyst, Brazil

Stress fissure («sun spangle») in baltic amber

Inclusions of hematite in aquamarine, Tanzania

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

Agate from Reichweiler, Germany

Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers

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