I am at a loss..

[BrokenShards]

These two items I am at a total loss on. The other three obviously are rocks, for which I have absolutely no knowledge on. So on to the first items, I found these today wandering the slack tide shores of the Hudson river, knowing that a plethora of coins, bottles, artifacts etc. can be found here. On the left side is a small square stone that has a hole in it. On the right, is a completely rectangle what appears to be marblish in appearence, I think it may be and old domino?
The second photo are two stones, the top two are greenish/blue in color and really stood out amongst other rocks.

Thanks for the help!

 

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[chrisplay2004]

Need measurements and backside photos...
please read this...
http://forum.treasurenet.com/index.php/topic,259110.0.html

 

[BrokenShards]

Need measurements and backside photos...
please read this...
http://forum.treasurenet.com/index.php/topic,259110.0.html

My apologies Chris, Here is the backside photo which is Identical to the front and I used a standing liberty for scale.

 

[Broken knee]

Could the square one be a net weight? The other sure looks like a domino. HH
Broken Knee

 

[chrisplay2004]

A common domino is 2" x 1".
Blanks pretty common.
Here are some used as pendants for necklaces...
Still looking fro the other thing

 

[mikusek]

The black one might be an atl atl weight, might post it in the Native American Artifacts section with a couple more views.

 

[chrisplay2004]

Fishing net weight is likley...like the one I posted, but need to know how heavy it is?
Or very large bead for a necklace...
What is it made of?

 

[BrokenShards]

Fishing net weight is likley...like the one I posted, but need to know how heavy it is?
Or very large bead for a necklace...
What is it made of?

I do not have a digital scale to determine weight, however it does not seem to have much heft and its made out of stone.