Blue Chalcedony
6.5–7Hardness (Mohs)
SiO₂Chemistry
43Known origins & mines
Glowing lavender-blue translucent chalcedony. Turkey's Eskişehir region and Namibia's Erongo produce the famous blue glow material; Oregon and Indonesia follow. A calming throat-chakra favorite.
Known origins & mines
Eskisehir Blue Chalcedony · Turkey
Turkish Anatolian chalcedony glows lavender-blue from borate-rich terrain — Eskisehir fields supply most modern blue chalcedony jewelry stoc…
Erongo Chalcedony Veins · Namibia
Namibian breccia pipes also grow soft blue chalcedony nodules alongside their famous aquamarine — gentle glow material prized for cabochons.…