Inclusions of gilalite aggregates in rock crystal from Brazil

Two-Phase inclusions and rutile needles in rock crystal from Brazil

Partially etched diamond crystal

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

Stress fissure («sun spangle») in baltic amber

Inclusions of hematite in aquamarine, Tanzania

Two-phase inclusions in sapphire, Sri Lanka

Two-phase inclusions in tourmaline from Namibia

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