Back Calcedonia (silica) AN عقيق أبيض Arabic Xalsedon Azerbaijani Халцэдон Byelorussian Халцэдон BE-X-OLD Халцедон Bulgarian Kalkedon Breton Calcedònia (mineral) Catalan Chalcedon Czech Kalcedon Danish
Chalcedon abò chalcedón - to je mineral. Òn mô chemiczny wzór SiO2.
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