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

Two-phase inclusions in tourmaline from Namibia

Natural etching structure on a crystal face of diamond (trigons), polarised light

Inclusions of fossil plant debris in opal from Wollo, Ethiopia

Fire opal, Mexico

Midge included in amber from the Baltic coast, polarised light

Two-Phase inclusions and rutile needles in rock crystal from Brazil

Inclusions of hematite in feldspar (sunstone), India

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