I found this stone/crystal when I walked down the street few days ago. Pic 1 Pic 3 Pic 4 Pic 5 Pic 6

I picked it up since it looks very different with other stones in the area,

I am really curious about what stone/crystal it is, but discovered nothing as I have zero knowledge on geology/earth science.

Therefore, I hope anyone here can help me to identify what stone it is.


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    $\begingroup$ if it dissolves in water=NACL,if not=quartz $\endgroup$ Nov 7, 2022 at 17:59