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

Dendrites in agate

Twin-crystal of chrysoberyl

Inclusions of fossil plant debris in opal from Wollo, Ethiopia

Midge included in amber from the Baltic coast, polarised light

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

Fluid inclusions containing mica and quartz, in aquamarine from Pakistan

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

«Red fox agate» from Patagonia, Argentina