A few finds. Im new and clueless

[tmarion]

A few finds. I'm new and clueless

I walked the banks of a river today and found these items. Any info would be appreciated even if it means that they are just rocks

The circular one has a very distinct groove around the outer edge and another groove on the inside. It is about 1.5" thick and 6" in diameter.

The white rectangular shaped one fits very nicely in my hand and appears to have indentions for all four fingers.

The

 

[monsterrack]

They all look natural to me, sorry but keep looking you will find something and welcome to T-net

 

[GaRebel1861]

That white round one looks like it has rust on it. You sure that ain't an old pot lid?