Chalcedony
The name Chalcedony (other spellings: Chalcedony, Chalkedon) denotes
- Chalcedon , an ancient city in what is now Turkey
- the titular archbishopric of Chalcedony
- the titular archbishopric Chalcedon dei Armeni
- the titular Archdiocese of Chalcedony dei Siri
- the Council of Chalcedony
- Chalcedony (mineral) , a mineral variety of quartz