Partially etched diamond crystal
Inclusions of hematite in aquamarine, Tanzania
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Colour zoning in ruby from Mong-Shu, Burma
Inclusion of apatite in ruby from Tanzania
Two-phase inclusions in tourmaline from Namibia
Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil
Structure in a healing fissure in topaz from Brazil

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