Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Bubbles and swirls in moldavite (natural glass)
Bubbles and swirls in moldavite (natural glass)
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Fire opal, Mexico
Fire opal, Mexico
Partially etched diamond crystal
Partially etched diamond crystal
Two-phase inclusions in sapphire, Sri Lanka
Two-phase inclusions in sapphire, Sri Lanka
Two-phase inclusions in tourmaline from Namibia
Two-phase inclusions in tourmaline from Namibia
«Red fox agate» from Patagonia, Argentina
«Red fox agate» from Patagonia, Argentina
Inclusions of hematite in aquamarine, Tanzania
Inclusions of hematite in aquamarine, Tanzania
Stress fissure («sun spangle») in baltic amber
Stress fissure («sun spangle») in baltic amber