Can someone tell me what this? I found it in my yard buried under a tree we cut down. My home was built in the 1960’s and the “boy” whose parents built the house burried his rock collection. His collection was from all over the US. He is now in his 60-70’s.
I have tried the tile, pen, and knife test. The knife test scratches off the black, but not the brown or green. All I know is it was found in the mid west. It is 6”x 3 1/2”. It is appropriately heavy for its size.