Two-phase inclusions in tourmaline from Namibia

Inclusions of hematite in feldspar (sunstone), India

Dumortierite in rock crystal, Brazil, polarised light

Two-phase inclusions in sapphire, Sri Lanka

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

Inclusions of hematite in aquamarine, Tanzania

Dendrites in agate

Stress fissure («sun spangle») in baltic amber

Empreinte

Fournisseur du site web :

Société Suisse de Gemmologie
c/o BDO SA
Hodlerstrasse 5
3001 Bern

Web development: Gecko Media

Plan du site
Empreinte
Protection des données
Conditions d'utilisation

© SGG/SSG 2026