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

«Red fox agate» from Patagonia, Argentina

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

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

Stress fissure («sun spangle») in baltic amber

Fluid inclusions in quartz with bituminous daughter minerals, China

Two-phase inclusions in sapphire, Sri Lanka

Dumortierite in rock crystal, Brazil, polarised light

Inclusions of gilalite aggregates in rock crystal from Brazil