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

Fluid inclusions containing mica and quartz, in aquamarine from Pakistan

Dendrites in agate

«Red fox agate» from Patagonia, Argentina

Spinel crystal in dolomite marble, Burma

Colour zoning in ruby from Mong-Shu, Burma

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

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

Inclusions of fossil plant debris in opal from Wollo, Ethiopia