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

Dumortierite in rock crystal, Brazil, polarised light

Fluid inclusions in quartz with bituminous daughter minerals, China

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

Inclusions of hematite in aquamarine, Tanzania

Fluid inclusions containing mica and quartz, in aquamarine from Pakistan

Midge included in amber from the Baltic coast, polarised light

Inclusions of fossil plant debris in opal from Wollo, Ethiopia

Two-phase inclusion in amethyst, Brazil