Curious if this "elephant bird egg" is real. The length and width are realistic and it weights about 3 lbs. 14.5 oz. It is smoother than I expected and appears to have been polished in places, especially in spots where some of the sections meet.
Surface covered in fine lines (often with branches) as well as small holes.
A small flake was examined under a microscope, showing one of the fine lines to consist of a series of holes. Other holes were also visible.
I dabbed the flake with vinegar and observed bubbling under the scope.
Images show some close-ups of the textured surface as well as a picture I took through the eyepiece of the microscope (underside of the flake is shown, with a series of pits following a fine line visible).
Looking forward to hearing what you all think. Thanks.