Two-phase inclusions in tourmaline from Namibia
Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Colour zoning in ruby from Mong-Shu, Burma
Spinel crystal in dolomite marble, Burma
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Inclusions of hematite in aquamarine, Tanzania
Two-phase inclusion in amethyst, Brazil
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