The stone: White Chalcedony
- Steadfast
- Trust
- Precision
Named for Chalcedon on the Bosphorus, and cut into Roman seal rings because warm wax will not stick to it.
- Material
- Cryptocrystalline quartz
- Hardness
- Mohs 6.5–7
- Sources
- Turkey, India, Brazil
Chalcedony is named for Chalcedon on the Bosphorus. Roman engravers chose it for seal rings for a practical reason — warm sealing wax releases cleanly from it — and Sasanian and Islamic workshops kept cutting it for a thousand years after Rome for the same reason.
Learn more about White Chalcedony