Our garden is in a spot where stones abound. The glacier left them here. For an ordinary farmer they are an annoyance. For a stone wall builder they are raw materials. Builders of stone walls have a special feeling for stones. Every stone is good for something. They can be wall stones , patio stones , path stones, fill for the driveway stones, and occasionally a stone chosen for spot on top of one of the stonewalls.
This unusual stone was found while Ed was weeding. It's quite dense and shiny with lots of sparkles. After we washed it off and got a good look , we both agreed that it was a stone for the top of the wall. That's where we put those interesting stones that we want to pick up and look at again.
It should stay there unless a crow takes a shine to it.