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

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

Inclusion of apatite in ruby from Tanzania

Bubbles and swirls in moldavite (natural glass)

«Red fox agate» from Patagonia, Argentina

Fire opal, Mexico

Agate from Reichweiler, Germany

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

Two-phase inclusions in sapphire, Sri Lanka