Bubbles and swirls in moldavite (natural glass)
Dumortierite in rock crystal, Brazil, polarised light
Twin-crystal of chrysoberyl
Partially etched diamond crystal
Inclusion of apatite in ruby from Tanzania
Fluid inclusions containing mica and quartz, in aquamarine from Pakistan
Structure in a healing fissure in topaz from Brazil
Colour zoning in ruby from Mong-Shu, Burma

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