I am sick with Covid, so I went out metal detecting in my yard today because I was very bored. While I was searching, my detector started going crazy. I dug down about 5 inches where it was at, and I found this weird stone-like object. I thought to myself, “this can’t be it,“ however, the detector said otherwise. I brought it to the concrete sidewalk, set it down and put the detector over it, and the detector was going crazy. This is indeed the object I was picking up.
I verified that it’s not magnetic, but it does not feel metal either. However, the detector is still picking it up.
Any idea what this is?