Inclusions of hematite in aquamarine, Tanzania

Twin-crystal of chrysoberyl

Structure in a healing fissure in topaz from Brazil

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

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

Two-phase inclusion in amethyst, Brazil

Fire opal, Mexico

Two-phase inclusions in sapphire, Sri Lanka

Two-phase inclusions in tourmaline from Namibia