Gobi eye agates are formed through ancient volcanic activity 150–300 million years ago, where silica-rich fluids filled gas cavities in lava, creating banded, orbicular "eyes". They are found in the Gobi Desert in Inner Mongolia.
Gobi eye agates are formed through ancient volcanic activity 150–300 million years ago, where silica-rich fluids filled gas cavities in lava, creating banded, orbicular "eyes". They are found in the Gobi Desert in Inner Mongolia.