Two-phase inclusions in tourmaline from Namibia
Twin-crystal of chrysoberyl
Natural etching structure on a crystal face of diamond (trigons), polarised light
Structure in a healing fissure in topaz from Brazil
Inclusions of hematite in aquamarine, Tanzania
Inclusions of gilalite aggregates in rock crystal from Brazil
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers

Contatti

Società Gemmologica Svizzera
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