«Red fox agate» from Patagonia, Argentina

Structure in a healing fissure in topaz from Brazil

Partially etched diamond crystal

Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers

Inclusions of fossil plant debris in opal from Wollo, Ethiopia

Natural etching structure on a crystal face of diamond (trigons), polarised light

Agate from Anzi, Maroc

Two-phase inclusions in sapphire, Sri Lanka

Note legali

Promotore di questo sito web:

Società Gemmologica Svizzera
c/o BDO SA
Hodlerstrasse 5
3001 Bern

Web development: Gecko Media

Mappa del sito
Note legali
Tutela dei dati
Condizioni d'uso

© SGG/SSG 2026