Structure in a healing fissure in topaz from Brazil
Spinel crystal in dolomite marble, Burma
Agate from Reichweiler, Germany
Natural etching structure on a crystal face of diamond (trigons), polarised light
Inclusion of apatite in ruby from Tanzania
Bubbles and swirls in moldavite (natural glass)
Two-Phase inclusions and rutile needles in rock crystal from Brazil
Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia

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