Inclusions of gilalite aggregates in rock crystal from Brazil
Two-phase inclusion in amethyst, Brazil
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Inclusion of apatite in ruby from Tanzania
Fire opal, Mexico
Structure in a healing fissure in topaz from Brazil
Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil
Bubbles and swirls in moldavite (natural glass)

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