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Agate from Anzi, Maroc
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Spinel crystal in dolomite marble, Burma
Structure in a healing fissure in topaz from Brazil
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Two-phase inclusions in sapphire, Sri Lanka
Dumortierite in rock crystal, Brazil, polarised light
Midge included in amber from the Baltic coast, polarised light
Natural etching structure on a crystal face of diamond (trigons), polarised light
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