Category:Quartz and chalcedony from Doubravice

Media in category "Quartz and chalcedony from Doubravice"

The following 3 files are in this category, out of 3 total.

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  Quartz, chalcedony SiO2 (13403368275).jpg 4,000 × 3,000; 3.78 MB
  
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  Quartz, chalcedony SiO2 (13403494513).jpg 4,000 × 3,000; 3.56 MB
  
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  Quartz, chalcedony SiO2 (13403862374).jpg 4,000 × 3,000; 3.53 MB