Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Midge included in amber from the Baltic coast, polarised light
Fluid inclusions in quartz with bituminous daughter minerals, China
Natural etching structure on a crystal face of diamond (trigons), polarised light
Two-phase inclusions in tourmaline from Namibia
Inclusions of gilalite aggregates in rock crystal from Brazil
Partially etched diamond crystal
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania

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