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

Colour zoning in ruby from Mong-Shu, Burma

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

Partially etched diamond crystal

«Red fox agate» from Patagonia, Argentina

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

Dendrites in agate

Stress fissure («sun spangle») in baltic amber

Inclusions of gilalite aggregates in rock crystal from Brazil