Spinel crystal in dolomite marble, Burma

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

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

Inclusions of fossil plant debris in opal from Wollo, Ethiopia

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

Inclusion of apatite in ruby from Tanzania

Partially etched diamond crystal

Fluid inclusions in quartz with bituminous daughter minerals, China

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