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

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

Inclusion of apatite in ruby from Tanzania

Inclusions of gilalite aggregates in rock crystal from Brazil

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

Two-phase inclusions in tourmaline from Namibia

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

Twin-crystal of chrysoberyl

Colour zoning in ruby from Mong-Shu, Burma