12+ Banded Agate Black. Black agate is extremely popular as it. Tepee canyon agate, south dakota, a marine sedimentary, banded agate that has been recovered from chert nodules within limestones of middle pennsylvanian (desmoinesian) age.
Banded agate is known as a healing stone, and has bands of white, tan and golden brown. Check out our black banded agate selection for the very best in unique or custom, handmade pieces from our shops. It can also increase stamina and help mental function.
