I'm pretty sure it's granite, but there is still quite a bit of reddish soil adhering to the pits, making it a bit deceptive. If you look at the most recent shot where I'm holding it on end, you can see a darker inclusion speckle just right of center, indicative of granite.
The point and edges look abraded to me, but not as if being struck by a hard blow, but maybe as if it were used to crack open acorns.