Partially etched diamond crystal

Fire opal, Mexico

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

Inclusions of gilalite aggregates in rock crystal from Brazil

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

Midge included in amber from the Baltic coast, polarised light

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

Inclusions of fossil plant debris in opal from Wollo, Ethiopia

«Red fox agate» from Patagonia, Argentina