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

Inclusions of hematite in aquamarine, Tanzania

Spinel crystal in dolomite marble, Burma

«Red fox agate» from Patagonia, Argentina

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

Fluid inclusions in quartz with bituminous daughter minerals, China

Fire opal, Mexico

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