Inclusions of fossil plant debris in opal from Wollo, Ethiopia
Inclusions of fossil plant debris in opal from Wollo, Ethiopia
Inclusions of hematite in aquamarine, Tanzania
Inclusions of hematite in aquamarine, Tanzania
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Twin-crystal of chrysoberyl
Twin-crystal of chrysoberyl
«Red fox agate» from Patagonia, Argentina
«Red fox agate» from Patagonia, Argentina
Agate from Reichweiler, Germany
Agate from Reichweiler, Germany
Dumortierite in rock crystal, Brazil, polarised light
Dumortierite in rock crystal, Brazil, polarised light
Inclusions of gilalite aggregates in rock crystal from Brazil
Inclusions of gilalite aggregates in rock crystal from Brazil
Agate from Anzi, Maroc
Agate from Anzi, Maroc
Dendrites in agate
Dendrites in agate