What is this?

[elliemae]

This is a friends find, it came from Indiana. It is black in color with a red circle, and is a little bit smaller than a baseball, and the stone changes temperature, the surface is very smooth with no tool marks.

[omnicognic]

what exactly do you mean by changes temperature?

[elliemae]

It sits in the same place, out of the sun and at times it will be cold to the touch and other times warmer.

[pickaway]

Hard to say from pic,Is it cupped like a bowl?
if so it "may" be a discoidial,kinda looks like hemitite material but thats just a "guess".

[elliemae]

No, it's not cupped, it perfectlly round on the bottom, and the top slopes up to a rounded point and the red band in below the point. The red band goes completelly around it. thanks

[pickaway]

Interesting,Ive never seen anything like it,There are alot of guys here who know alot more than me, so hopefully someone will know, anyways its a neat peice wahteaver it may be.