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

Structure in a healing fissure in topaz from Brazil

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

Two-phase inclusions in sapphire, Sri Lanka

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

Twin-crystal of chrysoberyl

Bubbles and swirls in moldavite (natural glass)

Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil

Fluid inclusions containing mica and quartz, in aquamarine from Pakistan