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

Two-phase inclusions in tourmaline from Namibia

Partially etched diamond crystal

Midge included in amber from the Baltic coast, polarised light

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

Dendrites in agate

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

Bubbles and swirls in moldavite (natural glass)

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