«Red fox agate» from Patagonia, Argentina
Natural etching structure on a crystal face of diamond (trigons), polarised light
Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
Colour zoning in ruby from Mong-Shu, Burma
Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil
Midge included in amber from the Baltic coast, polarised light
Two-phase inclusions in sapphire, Sri Lanka
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers


Società Gemmologica Svizzera
Segretariato : Iva Pavic

c/o Iva Pavic, Heerenschürlistrasse 4, 8051 Zürich

T. +41 78 720 98 54
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