Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Partially etched diamond crystal
Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
Inclusions of hematite in feldspar (sunstone), India
Colour zoning in ruby from Mong-Shu, Burma
Inclusion of apatite in ruby from Tanzania
Agate from Anzi, Maroc
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