I'm sure it's bone. There's still a little part where the three plates fuse where there's still a little pointyness.
The first time I became aware of my pointy head was fifth grade, when we did hand stands. The pressure Hurt my head.
When I first discovered my skull was shaped as females, I found out the females tend to have rather pointy heads, due to how it tapers off the top. So, I'd say this is really recent.
That would be funny if we where related. My Dad lives in Illinois, but I live in beautiful Colorado.