Sphaerolith: Kosakov (Czech Republic)
Sphaerolith: Kosakov (Czech Republic)
Sphaerolith: Morcinov (Czech Republic)
Sphaerolith: Doubravice quarry [Kyje] (Czech Republic)
Sphaerolith: Doubravice quarry [Kyje] (Czech Republic)
Sphaerolith: Doubravice quarry [Kyje] (Czech Republic)
Sphaerolith: Doubravice quarry [Kyje] (Czech Republic)
Sphaerolith: Železnice area (Czech Republic)
Sphaerolith: Levín (Czech Republic)
Sphaerolith: Doubravice quarry [Kyje] (Czech Republic)
Sphaerolith: Železnice area (Czech Republic)
Sphaerolith: Železnice area (Czech Republic)
Sphaerolith: Levín (Czech Republic)
Sphaerolith: Morcinov (Czech Republic)
Sphaerolith: Železnice area (Czech Republic)
Sphaerolith: Železnice area (Czech Republic)
Sphaerolith: Kozlov (Czech Republic)
Sphaerolith: Doubravice quarry [Kyje] (Czech Republic)
Sphaerolith: Doubravice quarry [Kyje] (Czech Republic)
Sphaerolith: Železnice area (Czech Republic)
Sphaerolith: Železnice area (Czech Republic)
Sphaerolith: Železnice area (Czech Republic)
Sphaerolith: Doubravice (Czech Republic)
Sphaerolith: Doubravice (Czech Republic)
Sphaerolith: Doubravice (Czech Republic)
Sphaerolith: Kozlov (Czech Republic)
Sphaerolith: Morcinov (Czech Republic)
Sphaerolith: Doubravice (Czech Republic)
Sphaerolith: Doubravice (Czech Republic)
Sphaerolith: Doubravice (Czech Republic)