Quartz-chalcedone-carbonates veins from rhyolite from Sudetes (Poland)
Quartz-chalcedone-carbonates veins from rhyolite from Sudetes (Poland)
Ornamental rhyolite from Okrzszyn (Sudetes, Poland)
Ore minerals in quartz-chlorite schist from Sudetes (Poland)
Malachite on vein quartz from Sudetes (Poland)
Malachite in quartz and brown iron ore from Sudetes (Poland)
Bluish hialite on quartzite schist from Sudetes (Poland)
Violet, chrome bearing chalcedony from Sudetes (Poland)
Violet, chrome bearing chalcedony from Sudetes (Poland)