Sieber Agate 8mm Round AA Grade - 15-16 Inch Shape_Keshi cobalt or nickel

cobalt or nickel

but can also be found in Madagascar and US

It is not possible to drive to the location of the mine so the material has to be hiked out of the area through rugged terrain

and is traceable to virtually all ancient civilizations

Sieber Agate 8mm Round AA Grade - 15-16 Inch Shape_Keshi cobalt or nickelSieber agate is not a true agate but rather a glassy, dark blue grey or green copper slag that formed during ancient copper smelting in Germany, specifically from the Siebertal area. This historical "ancient slag" has a naturally swirling, intricate appearance resembling agate due to silica and mineral inclusions from the smelting process. It is a rare and collectible material known for its lapidary qualities, similar to obsidian, and is sometimes