Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil
Inclusions of gilalite aggregates in rock crystal from Brazil
Agate from Reichweiler, Germany
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Inclusions of fossil plant debris in opal from Wollo, Ethiopia
Fluid inclusions in quartz with bituminous daughter minerals, China
Colour zoning in ruby from Mong-Shu, Burma
Fire opal, Mexico
«Red fox agate» from Patagonia, Argentina
Structure in a healing fissure in topaz from Brazil
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