Anyone have any idea what these rocks could possibly be?

[Mecrook]

I have had these rocks in my room for a while now and have no clue what they might be. Please enlighten me if u can. Thank u in advance!

 

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[Buckshotnc]

Welcome to Treasurenet, sorry I can't help you maybe others will be able to. It's hard to tell sometimes from pictures.

 

[AmericanGeode]

Believe the 2 black stones are schist with mica (the sparkling bits)
Larger stone is a granite with specks of pyrite
The smoothed stone I would call a river pebble or river stone with nice layer or vein of quartz