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

Twin-crystal of chrysoberyl

Structure in a healing fissure in topaz from Brazil

Inclusions of hematite in aquamarine, Tanzania

Inclusions of hematite in feldspar (sunstone), India

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

Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia

Dendrites in agate

Two-phase inclusion in amethyst, Brazil