4 3/4" Adena Bi-Concave Gorget - red Slate found in Medina Co., Ohio. Pictured in Ancient Ohioans

4 3/4" Adena Bi-Concave Gorget made from red Slate with a heavy patina and nice mineral deposits on surface. Found in Medina Co. Ohio. Pictured in Ancient Ohioans Their Neighbors page 364 1941. Ex. Raymond Vietzen Collection.