Agate from Reichweiler, Germany
Agate from Reichweiler, Germany
Partially etched diamond crystal
Partially etched diamond crystal
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Stress fissure («sun spangle») in baltic amber
Stress fissure («sun spangle») in baltic amber
Dumortierite in rock crystal, Brazil, polarised light
Dumortierite in rock crystal, Brazil, polarised light
Two-phase inclusion in amethyst, Brazil
Two-phase inclusion in amethyst, Brazil
Colour zoning in ruby from Mong-Shu, Burma
Colour zoning in ruby from Mong-Shu, Burma
Midge included in amber from the Baltic coast, polarised light
Midge included in amber from the Baltic coast, polarised light