Bubbles and swirls in moldavite (natural glass)

Two-phase inclusion in amethyst, Brazil

Two-phase inclusions in tourmaline from Namibia

Dendrites in agate

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

Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light

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

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