Colour zoning in ruby from Mong-Shu, Burma

Agate from Reichweiler, Germany

«Red fox agate» from Patagonia, Argentina

Two-phase inclusions in sapphire, Sri Lanka

Midge included in amber from the Baltic coast, polarised light

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

Fluid inclusions in quartz with bituminous daughter minerals, China

Spinel crystal in dolomite marble, Burma

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