Good day, I have had this stone since I was a child,30 yrs or so. I cannot be sure where it came from, though i was originally told it came from the southern White Mt. of New Hampshire. It resembles a white colored, shattered stone bound together with a hard black substance I guess to be slag, but I cannot be sure.
It is 3"x2" & one area of the white stone is mildly translucent. Non-magnetic.