Two-phase inclusions in sapphire, Sri Lanka

Dendrites in agate

Agate from Reichweiler, Germany

Colour zoning in ruby from Mong-Shu, Burma

Fluid inclusions containing mica and quartz, in aquamarine from Pakistan

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

Fluid inclusions in quartz with bituminous daughter minerals, China

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

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