Inclusions of gilalite aggregates in rock crystal from Brazil

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

Dendrites in agate

Twin-crystal of chrysoberyl

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

«Red fox agate» from Patagonia, Argentina

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

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

Bubbles and swirls in moldavite (natural glass)