Agate from Anzi, Maroc
Agate from Anzi, Maroc
Two-phase inclusions in tourmaline from Namibia
Two-phase inclusions in tourmaline from Namibia
Structure in a healing fissure in topaz from Brazil
Structure in a healing fissure in topaz from Brazil
Partially etched diamond crystal
Partially etched diamond crystal
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Inclusions of hematite in feldspar (sunstone), India
Inclusions of hematite in feldspar (sunstone), India
Dumortierite in rock crystal, Brazil, polarised light
Dumortierite in rock crystal, Brazil, polarised light
Bubbles and swirls in moldavite (natural glass)
Bubbles and swirls in moldavite (natural glass)
Colour zoning in ruby from Mong-Shu, Burma
Colour zoning in ruby from Mong-Shu, Burma
Inclusion of apatite in ruby from Tanzania
Inclusion of apatite in ruby from Tanzania