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Twin-crystal of chrysoberyl
Partially etched diamond crystal
Spinel crystal in dolomite marble, Burma
Two-phase inclusion in amethyst, Brazil
Fluid inclusions in quartz with bituminous daughter minerals, China
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Two-phase inclusions in tourmaline from Namibia
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers

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