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
Fire opal, Mexico
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Natural etching structure on a crystal face of diamond (trigons), polarised light
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Structure in a healing fissure in topaz from Brazil
Two-phase inclusion in amethyst, Brazil

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