Looks like a man-made product, but the giant circular saw marks on the back of some of these suggest they were quarried, not poured. Unsure of the material. Never installed; may have minor chips/breaks around the edges.
Width: 47.25 in.
Length: 23.625 in.
Thickness: 1 in.
Time in Stock: Less than 1 week
Job Number: 719J6156