Spinel crystal in dolomite marble, Burma

Stress fissure («sun spangle») in baltic amber

«Red fox agate» from Patagonia, Argentina

Inclusions of gilalite aggregates in rock crystal from Brazil

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

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

Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light

Two-phase inclusions in tourmaline from Namibia

Inclusions of fossil plant debris in opal from Wollo, Ethiopia