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Bubbles and swirls in moldavite (natural glass)
Two-Phase inclusions and rutile needles in rock crystal from Brazil
Inclusions of fossil plant debris in opal from Wollo, Ethiopia
Colour zoning in ruby from Mong-Shu, Burma
Natural etching structure on a crystal face of diamond (trigons), polarised light
Two-phase inclusions in tourmaline from Namibia
Partially etched diamond crystal
Midge included in amber from the Baltic coast, polarised light

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