Two-phase inclusion in amethyst, Brazil
Fire opal, Mexico
Dumortierite in rock crystal, Brazil, polarised light
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Two-Phase inclusions and rutile needles in rock crystal from Brazil
Structure in a healing fissure in topaz from Brazil
Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil

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